封面
市场调查报告书
商品编码
1612848

牙刷的全球市场:产业分析,规模,占有率,成长,趋势,预测(2024年~2031年)

Toothbrush Market: Global Industry Analysis, Size, Share, Growth, Trends, and Forecast, 2024-2031

出版日期: | 出版商: Persistence Market Research | 英文 180 Pages | 商品交期: 2-5个工作天内

价格
简介目录

2024年全球牙刷市场规模预估为75.1亿美元,2024年至2031年预测期间复合年增长率为4.3%,预计2031年将达到100.8亿美元。

全球牙刷市场包括各种牙刷产品,从手动牙刷到电动牙刷。推动市场成长的主要因素是口腔卫生意识的提高、电动牙刷的技术创新以及消费者对牙齿健康日益增长的兴趣。可支配收入的增加、个人护理趋势的上升以及消费者保健意识的提高进一步增强了对牙刷的需求。

有几个因素正在推动全球牙刷市场的成长,包括由于饮食习惯的改变、人口老化以及口腔护理产品的普及而导致的牙齿问题日益增加。技术创新,尤其是具有智慧功能的电动牙刷,也在推动市场发展。对个人护理产品的需求不断增长,以及人们对口腔卫生重要性的认识不断提高,都有助于市场的扩张。此外,大公司的行销活动,例如牙科专业人士的认可,进一步促进了牙刷的使用。

由于电动牙刷和智慧牙刷的日益普及,牙刷市场呈现出巨大的成长机会,尤其是在新兴经济体。对由永续材料製成的环保牙刷的需求不断增长,这提供了另一个机会。此外,电子商务平台正在成为重要的销售管道,为消费者增加便利性并提供市场成长途径。对未开发地区的市场渗透以及可生物降解牙刷等产品的创新可能会进一步增强市场前景。

本报告提供全球牙刷市场相关调查,提供各产品类型,各终端用户,材质,各流通管道,各地区趋势,及加入此市场的主要企业简介等资讯。

目录

第1章 摘要整理

第2章 市场概要

  • 市场范围和定义
  • 市场动态
  • 宏观经济要素
  • COVID-19影响分析
  • 预测要素- 相关性及影响

第3章 附加价值的洞察

第4章 价格趋势分析,2019年~2031年

第5章 全球牙刷市场预测:实际成果(2019年~2023年)及预测(2024年~2031年)

  • 主要的焦点
  • 市场规模(10亿美元)分析与预测
  • 全球牙刷市场预测:各产品类型
  • 市场魅力分析:各产品类型
  • 全球牙刷市场预测:各终端用户
  • 市场魅力分析:各终端用户
  • 全球牙刷市场预测:材质
  • 市场魅力分析:材质
  • 全球牙刷市场预测:各流通管道
  • 市场魅力分析:各流通管道

第6章 全球牙刷市场预测:各地区

  • 主要的焦点
  • 过去的市场规模(10亿美元)和数量(个体)的分析,各地区,2019年~2023年
  • 目前市场规模(10亿美元)和数量(个体)的分析与预测,各地区,2024年~2031年
  • 市场魅力分析:各地区

第7章 北美的牙刷市场预测:实际成果(2019年~2023年)及预测(2024年~2031年)

第8章 欧洲的牙刷市场预测:实际成果(2019年~2023年)及预测(2024年~2031年)

第9章 东亚的牙刷市场预测:实际成果(2019年~2023年)及预测(2024年~2031年)

第10章 南亚和大洋洲的牙刷市场预测:实际成果(2019年~2023年)与预测(2024年~2031年)

第11章 南美的牙刷市场预测:实际成果(2019年~2023年)及预测(2024年~2031年)

第12章 中东·非洲的牙刷市场预测:实际成果(2019年~2023年)及预测(2024年~2031年)

第13章 竞争情形

  • 市场占有率分析,2023年
  • 市场结构
  • 企业简介(详细内容- 概要,财务,策略,最近的趋势)
    • Procter & Gamble (P&G)
    • Colgate-Palmolive
    • Philips Sonicare
    • Henkel AG & Co. KGaA
    • Fairywill
    • Quip
    • Oral-B (a subsidiary of P&G)
    • BrushBuddies
    • Xiaomi
    • Panasonic Corporation
    • Omron Corporation
    • Caresmith
    • Oclean
    • SmileDirectClub
    • Prooral

第14章 附录

简介目录
Product Code: PMRREP33311

Persistence Market Research has recently released a comprehensive report on the global Toothbrush Market, providing an in-depth analysis of key market dynamics, including driving forces, emerging trends, opportunities, and challenges. This report offers a detailed understanding of the market landscape, helping stakeholders make well-informed decisions.

Key Insights:

  • Toothbrush Market Size (2024E): US$7.51 Bn
  • Projected Market Value (2031F): US$10.08 Bn
  • Global Market Growth Rate (CAGR 2024 to 2031): 4.3%

Toothbrush Market - Report Scope:

The global toothbrush market includes a variety of toothbrush products, ranging from manual to electric toothbrushes. The market growth is largely driven by the increasing awareness of oral hygiene, technological innovations in electric toothbrushes, and rising consumer interest in dental health. The demand for toothbrushes is further bolstered by rising disposable income, the growing trend of personal care, and increasing healthcare awareness among consumers.

Market Growth Drivers:

Several factors are driving the growth of the global toothbrush market, including an increase in dental problems due to changing diets, aging populations, and greater access to oral care products. Technological innovations, especially in electric toothbrushes with smart features, are also boosting the market. Increased demand for personal care products, along with the growing awareness about the importance of oral hygiene, contributes to market expansion. Additionally, marketing campaigns by key players, such as endorsements by dental professionals, further promote toothbrush usage.

Market Restraints:

Despite strong growth, the toothbrush market faces challenges, including price sensitivity, particularly in developing regions, and environmental concerns related to plastic toothbrushes. The market also faces competition from low-cost and private label products, which may limit the adoption of branded toothbrushes. Furthermore, market saturation in developed regions could restrict growth in certain areas, necessitating innovation and differentiation by leading brands.

Market Opportunities:

The toothbrush market offers significant growth opportunities driven by increasing adoption of electric and smart toothbrushes, particularly in developed economies. The rise in demand for eco-friendly toothbrushes made from sustainable materials presents another opportunity. Additionally, e-commerce platforms are emerging as a significant sales channel, offering greater convenience for consumers and providing a growth avenue for the market. Market penetration in untapped regions and innovations in product offerings, such as biodegradable toothbrushes, can further enhance market prospects.

Key Questions Answered in the Report:

  • What are the primary factors driving the global growth of the toothbrush market?
  • Which product types are gaining the highest adoption across different regions?
  • How are technological innovations influencing the competitive landscape of the toothbrush market?
  • Who are the key players in the toothbrush market, and what strategies are they employing to maintain their market positions?
  • What are the emerging trends and future outlooks for the global toothbrush market?

Competitive Intelligence and Business Strategy:

Leading companies in the global toothbrush market, such as Procter & Gamble, Koninklijke Philips NV, and Colgate Palmolive Company, are focusing on product innovation, diversification, and expanding their product lines to maintain a competitive edge. These companies are investing in electric toothbrush technologies, including features such as pressure sensors and Bluetooth connectivity. Collaborations with dental professionals, influencers, and retailers enhance market reach and consumer trust. Focusing on sustainability by developing eco-friendly toothbrushes also helps companies cater to the growing demand for environmentally conscious products.

Key Companies Profiled:

  • Procter & Gamble
  • Koninklijke Philips NV
  • Kolibree
  • Colgate Palmolive Company
  • Johnson & Johnson
  • Lion Corporation
  • Unilever plc
  • Hawley & Hazel (BVI) Co. Ltd.
  • GlaxoSmithKline plc
  • Ultradent Products Inc.
  • 3M Company
  • Panasonic

Toothbrush Industry Research by Category:

By Product Type:

  • Manual
  • Hardware

By Bristle Type:

  • Soft
  • Medium
  • Hard

By Application:

  • Kids
  • Adults

By Sales Channel:

  • Hypermarket/Supermarket
  • Specialty Stores
  • Drug Stores & Pharmacies
  • Online Retailers

By Region:

  • North America
  • Latin America
  • Europe
  • South Asia & Oceania
  • East Asia
  • The Middle East & Africa

Table of Contents

1. Executive Summary

  • 1.1. Global Toothbrush Market Snapshot, 2024 - 2031
  • 1.2. Market Opportunity Assessment, 2024 - 2031, US$ Bn
  • 1.3. Key Market Trends
  • 1.4. Future Market Projections
  • 1.5. Premium Market Insights
  • 1.6. Industry Developments and Key Market Events
  • 1.7. PMR Analysis and Recommendations

2. Market Overview

  • 2.1. Market Scope and Definition
  • 2.2. Market Dynamics
    • 2.2.1. Drivers
    • 2.2.2. Restraints
    • 2.2.3. Opportunity
    • 2.2.4. Challenges
    • 2.2.5. Key Trends
  • 2.3. Macro-Economic Factors
    • 2.3.1. Global Sectorial Outlook
    • 2.3.2. Global GDP Growth Outlook
    • 2.3.3. Global Healthcare Spending Outlook
  • 2.4. COVID-19 Impact Analysis
  • 2.5. Forecast Factors - Relevance and Impact

3. Value Added Insights

  • 3.1. Product Adoption Analysis
  • 3.2. Epidemiology - Deafness and Hearing Loss
  • 3.3. Technology Assessment
  • 3.4. Regulatory Landscape
  • 3.5. Value Chain Analysis
    • 3.5.1. List of Distribution Channel/Marketplaces
      • 3.5.1.1. Retail
      • 3.5.1.2. E-Commerce
    • 3.5.2. List of End User (Industry)
  • 3.6. Key Deals and Mergers
  • 3.7. PESTLE Analysis
  • 3.8. Porter's Five Force Analysis

4. Price Trend Analysis, 2019 - 2031

  • 4.1. Key Highlights
  • 4.2. Key Factors Impacting Product Type Prices
  • 4.3. Pricing Analysis, By Product Type
  • 4.4. Regional Prices and Product Type Preferences

5. Global Toothbrush Market Outlook: Historical (2019 - 2023) and Forecast (2024 - 2031)

  • 5.1. Key Highlights
    • 5.1.1. Market Volume (Units) Projections
    • 5.1.2. Market Size (US$ Bn) and Y-o-Y Growth
    • 5.1.3. Absolute $ Opportunity
  • 5.2. Market Size (US$ Bn) Analysis and Forecast
    • 5.2.1. Historical Market Size (US$ Bn) Analysis, 2019 - 2023
    • 5.2.2. Current Market Size (US$ Bn) Analysis and Forecast, 2024 - 2031
  • 5.3. Global Toothbrush Market Outlook: Product Type
    • 5.3.1. Introduction / Key Findings
    • 5.3.2. Historical Market Size (US$ Bn) and Volume (Units) Analysis, By Product Type, 2019 - 2023
    • 5.3.3. Current Market Size (US$ Bn) and Volume (Units) Analysis and Forecast, By Product Type, 2024 - 2031
      • 5.3.3.1. Manual Toothbrushes
      • 5.3.3.2. Electric Toothbrushes
        • 5.3.3.2.1. Rechargeable
        • 5.3.3.2.2. Battery-Powered
  • 5.4. Market Attractiveness Analysis: Product Type
  • 5.5. Global Toothbrush Market Outlook: End-User
    • 5.5.1. Introduction / Key Findings
    • 5.5.2. Historical Market Size (US$ Bn) Analysis, By End-User, 2019 - 2023
    • 5.5.3. Current Market Size (US$ Bn) Analysis and Forecast, By End-User, 2024 - 2031
      • 5.5.3.1. Adults
      • 5.5.3.2. Children
      • 5.5.3.3. Elderly
  • 5.6. Market Attractiveness Analysis: End-User
  • 5.7. Global Toothbrush Market Outlook: By Material
    • 5.7.1. Introduction / Key Findings
    • 5.7.2. Historical Market Size (US$ Bn) Analysis, By Material, 2019 - 2023
    • 5.7.3. Current Market Size (US$ Bn) Analysis and Forecast, By Material, 2024 - 2031
      • 5.7.3.1. Bristles
      • 5.7.3.2. Handle Material
  • 5.8. Market Attractiveness Analysis: By Material
  • 5.9. Global Toothbrush Market Outlook: Distribution Channel
    • 5.9.1. Introduction / Key Findings
    • 5.9.2. Historical Market Size (US$ Bn) Analysis, By Distribution Channel, 2019 - 2023
    • 5.9.3. Current Market Size (US$ Bn) Analysis and Forecast, By Distribution Channel, 2024 - 2031
      • 5.9.3.1. Offline Stores
      • 5.9.3.2. Online Retail
  • 5.10. Market Attractiveness Analysis: Distribution Channel

6. Global Toothbrush Market Outlook: Region

  • 6.1. Key Highlights
  • 6.2. Historical Market Size (US$ Bn) and Volume (Units) Analysis, By Region, 2019 - 2023
  • 6.3. Current Market Size (US$ Bn) and Volume (Units) Analysis and Forecast, By Region, 2024 - 2031
    • 6.3.1. North America
    • 6.3.2. Europe
    • 6.3.3. East Asia
    • 6.3.4. South Asia and Oceania
    • 6.3.5. Latin America
    • 6.3.6. Middle East & Africa
  • 6.4. Market Attractiveness Analysis: Region

7. North America Toothbrush Market Outlook: Historical (2019 - 2023) and Forecast (2024 - 2031)

  • 7.1. Key Highlights
  • 7.2. Pricing Analysis
  • 7.3. Historical Market Size (US$ Bn) and Volume (Units) Analysis, By Market, 2019 - 2023
    • 7.3.1. By Country
    • 7.3.2. By Product Type
    • 7.3.3. By End-User
    • 7.3.4. By Material
    • 7.3.5. By Distribution Channel
  • 7.4. Current Market Size (US$ Bn) Analysis and Forecast, By Country, 2024 - 2031
    • 7.4.1. U.S.
    • 7.4.2. Canada
  • 7.5. Current Market Size (US$ Bn) and Volume (Units) Analysis and Forecast, By Product Type, 2024 - 2031
    • 7.5.1. Manual Toothbrushes
    • 7.5.2. Electric Toothbrushes
      • 7.5.2.1. Rechargeable
      • 7.5.2.2. Battery-Powered
  • 7.6. Current Market Size (US$ Bn) Analysis and Forecast, By End-User, 2024 - 2031
    • 7.6.1. Adults
    • 7.6.2. Children
    • 7.6.3. Elderly
  • 7.7. Current Market Size (US$ Bn) Analysis and Forecast, By Material, 2024 - 2031
    • 7.7.1. Bristles
    • 7.7.2. Handle Material
  • 7.8. Market Attractiveness Analysis
  • 7.9. Current Market Size (US$ Bn) Analysis and Forecast, By Distribution Channel, 2024 - 2031
    • 7.9.1. Offline Stores
    • 7.9.2. Online Retail
  • 7.10. Market Attractiveness Analysis

8. Europe Toothbrush Market Outlook: Historical (2019 - 2023) and Forecast (2024 - 2031)

  • 8.1. Key Highlights
  • 8.2. Pricing Analysis
  • 8.3. Historical Market Size (US$ Bn) and Volume (Units) Analysis, By Market, 2019 - 2023
    • 8.3.1. By Country
    • 8.3.2. By Product Type
    • 8.3.3. By End-User
    • 8.3.4. By Material
    • 8.3.5. By Distribution Channel
  • 8.4. Current Market Size (US$ Bn) Analysis and Forecast, By Country, 2024 - 2031
    • 8.4.1. Germany
    • 8.4.2. France
    • 8.4.3. U.K.
    • 8.4.4. Italy
    • 8.4.5. Spain
    • 8.4.6. Russia
    • 8.4.7. Turkey
    • 8.4.8. Rest of Europe
  • 8.5. Current Market Size (US$ Bn) and Volume (Units) Analysis and Forecast, By Product Type, 2024 - 2031
    • 8.5.1. Manual Toothbrushes
    • 8.5.2. Electric Toothbrushes
      • 8.5.2.1. Rechargeable
      • 8.5.2.2. Battery-Powered
  • 8.6. Current Market Size (US$ Bn) Analysis and Forecast, By End-User, 2024 - 2031
    • 8.6.1. Adults
    • 8.6.2. Children
    • 8.6.3. Elderly
  • 8.7. Current Market Size (US$ Bn) Analysis and Forecast, By Material, 2024 - 2031
    • 8.7.1. Bristles
    • 8.7.2. Handle Material
  • 8.8. Market Attractiveness Analysis
  • 8.9. Current Market Size (US$ Bn) Analysis and Forecast, By Distribution Channel, 2024 - 2031
    • 8.9.1. Offline Stores
    • 8.9.2. Online Retail
  • 8.10. Market Attractiveness Analysis

9. East Asia Toothbrush Market Outlook: Historical (2019 - 2023) and Forecast (2024 - 2031)

  • 9.1. Key Highlights
  • 9.2. Pricing Analysis
  • 9.3. Historical Market Size (US$ Bn) and Volume (Units) Analysis, By Market, 2019 - 2023
    • 9.3.1. By Country
    • 9.3.2. By Product Type
    • 9.3.3. By End-User
    • 9.3.4. By Material
    • 9.3.5. By Distribution Channel
  • 9.4. Current Market Size (US$ Bn) Analysis and Forecast, By Country, 2024 - 2031
    • 9.4.1. China
    • 9.4.2. Japan
    • 9.4.3. South Korea
  • 9.5. Current Market Size (US$ Bn) and Volume (Units) Analysis and Forecast, By Product Type, 2024 - 2031
    • 9.5.1. Manual Toothbrushes
    • 9.5.2. Electric Toothbrushes
      • 9.5.2.1. Rechargeable
      • 9.5.2.2. Battery-Powered
  • 9.6. Current Market Size (US$ Bn) Analysis and Forecast, By End-User, 2024 - 2031
    • 9.6.1. Adults
    • 9.6.2. Children
    • 9.6.3. Elderly
  • 9.7. Current Market Size (US$ Bn) Analysis and Forecast, By Material, 2024 - 2031
    • 9.7.1. Bristles
    • 9.7.2. Handle Material
  • 9.8. Market Attractiveness Analysis
  • 9.9. Current Market Size (US$ Bn) Analysis and Forecast, By Distribution Channel, 2024 - 2031
    • 9.9.1. Offline Stores
    • 9.9.2. Online Retail
  • 9.10. Market Attractiveness Analysis

10. South Asia & Oceania Toothbrush Market Outlook: Historical (2019 - 2023) and Forecast (2024 - 2031)

  • 10.1. Key Highlights
  • 10.2. Pricing Analysis
  • 10.3. Historical Market Size (US$ Bn) and Volume (Units) Analysis, By Market, 2019 - 2023
    • 10.3.1. By Country
    • 10.3.2. By Product Type
    • 10.3.3. By End-User
    • 10.3.4. By Material
    • 10.3.5. By Distribution Channel
  • 10.4. Current Market Size (US$ Bn) Analysis and Forecast, By Country, 2024 - 2031
    • 10.4.1. India
    • 10.4.2. Southeast Asia
    • 10.4.3. ANZ
    • 10.4.4. Rest of South Asia & Oceania
  • 10.5. Current Market Size (US$ Bn) and Volume (Units) Analysis and Forecast, By Product Type, 2024 - 2031
    • 10.5.1. Manual Toothbrushes
    • 10.5.2. Electric Toothbrushes
      • 10.5.2.1. Rechargeable
      • 10.5.2.2. Battery-Powered
  • 10.6. Current Market Size (US$ Bn) Analysis and Forecast, By End-User, 2024 - 2031
    • 10.6.1. Adults
    • 10.6.2. Children
    • 10.6.3. Elderly
  • 10.7. Current Market Size (US$ Bn) Analysis and Forecast, By Material, 2024 - 2031
    • 10.7.1. Bristles
    • 10.7.2. Handle Material
  • 10.8. Market Attractiveness Analysis
  • 10.9. Current Market Size (US$ Bn) Analysis and Forecast, By Distribution Channel, 2024 - 2031
    • 10.9.1. Offline Stores
    • 10.9.2. Online Retail
  • 10.10. Market Attractiveness Analysis

11. Latin America Toothbrush Market Outlook: Historical (2019 - 2023) and Forecast (2024 - 2031)

  • 11.1. Key Highlights
  • 11.2. Pricing Analysis
  • 11.3. Historical Market Size (US$ Bn) and Volume (Units) Analysis, By Market, 2019 - 2023
    • 11.3.1. By Country
    • 11.3.2. By Product Type
    • 11.3.3. By Price Range
    • 11.3.4. BY Distribution Channel
  • 11.4. Current Market Size (US$ Bn) Analysis and Forecast, By Country, 2024 - 2031
    • 11.4.1. Brazil
    • 11.4.2. Mexico
    • 11.4.3. Rest of Latin America
  • 11.5. Current Market Size (US$ Bn) and Volume (Units) Analysis and Forecast, By Product Type, 2024 - 2031
    • 11.5.1. Manual Toothbrushes
    • 11.5.2. Electric Toothbrushes
      • 11.5.2.1. Rechargeable
      • 11.5.2.2. Battery-Powered
  • 11.6. Current Market Size (US$ Bn) Analysis and Forecast, By End-User, 2024 - 2031
    • 11.6.1. Adults
    • 11.6.2. Children
    • 11.6.3. Elderly
  • 11.7. Current Market Size (US$ Bn) Analysis and Forecast, By Material, 2024 - 2031
    • 11.7.1. Bristles
    • 11.7.2. Handle Material
  • 11.8. Market Attractiveness Analysis
  • 11.9. Current Market Size (US$ Bn) Analysis and Forecast, By Distribution Channel, 2024 - 2031
    • 11.9.1. Offline Stores
    • 11.9.2. Online Retail
  • 11.10. Market Attractiveness Analysis

12. Middle East & Africa Toothbrush Market Outlook: Historical (2019 - 2023) and Forecast (2024 - 2031)

  • 12.1. Key Highlights
  • 12.2. Pricing Analysis
  • 12.3. Historical Market Size (US$ Bn) and Volume (Units) Analysis, By Market, 2019 - 2023
    • 12.3.1. By Country
    • 12.3.2. By Product Type
    • 12.3.3. By End-User
    • 12.3.4. By Material
    • 12.3.5. By Distribution Channel
  • 12.4. Current Market Size (US$ Bn) Analysis and Forecast, By Country, 2024 - 2031
    • 12.4.1. GCC Countries
    • 12.4.2. Egypt
    • 12.4.3. South Africa
    • 12.4.4. Northern Africa
    • 12.4.5. Rest of Middle East & Africa
  • 12.5. Current Market Size (US$ Bn) and Volume (Units) Analysis and Forecast, By Product Type, 2024 - 2031
    • 12.5.1. Manual Toothbrushes
    • 12.5.2. Electric Toothbrushes
      • 12.5.2.1. Rechargeable
      • 12.5.2.2. Battery-Powered
  • 12.6. Current Market Size (US$ Bn) Analysis and Forecast, By End-User, 2024 - 2031
    • 12.6.1. Adults
    • 12.6.2. Children
    • 12.6.3. Elderly
  • 12.7. Current Market Size (US$ Bn) Analysis and Forecast, By Material, 2024 - 2031
    • 12.7.1. Bristles
    • 12.7.2. Handle Material
  • 12.8. Market Attractiveness Analysis
  • 12.9. Current Market Size (US$ Bn) Analysis and Forecast, By Distribution Channel, 2024 - 2031
    • 12.9.1. Offline Stores
    • 12.9.2. Online Retail
  • 12.10. Market Attractiveness Analysis

13. Competition Landscape

  • 13.1. Market Share Analysis, 2023
  • 13.2. Market Structure
    • 13.2.1. Competition Intensity Mapping By Market
    • 13.2.2. Competition Dashboard
  • 13.3. Company Profiles (Details - Overview, Financials, Strategy, Recent Developments)
    • 13.3.1. Procter & Gamble (P&G)
      • 13.3.1.1. Overview
      • 13.3.1.2. Segments and Products
      • 13.3.1.3. Key Financials
      • 13.3.1.4. Market Developments
      • 13.3.1.5. Market Strategy
    • 13.3.2. Colgate-Palmolive
    • 13.3.3. Philips Sonicare
    • 13.3.4. Henkel AG & Co. KGaA
    • 13.3.5. Fairywill
    • 13.3.6. Quip
    • 13.3.7. Oral-B (a subsidiary of P&G)
    • 13.3.8. BrushBuddies
    • 13.3.9. Xiaomi
    • 13.3.10. Panasonic Corporation
    • 13.3.11. Omron Corporation
    • 13.3.12. Caresmith
    • 13.3.13. Oclean
    • 13.3.14. SmileDirectClub
    • 13.3.15. Prooral

14. Appendix

  • 14.1. Research Methodology
  • 14.2. Research Assumptions
  • 14.3. Acronyms and Abbreviations