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There are many classifications of industries with the primary, secondary, and tertiary classes being classic industry sectors but with quaternary and quinary sectors being used in more modern industries. A primary industry is one that extracts resources from the Earth, such as farming and mining.


An industry is the production of goods or related services within an economy. The major source of revenue of a group or company is the indicator of its relevant industry. When a large group has multiple sources of revenue generation, it is considered to be working in different industries.


These pages display a ‘snapshot’ of national data obtained from different BLS surveys and programs. Many programs also produce additional industry detail, including state, county, and metropolitan area data. The data shown are based on the North American Industry Classification System (NAICS) supersector, sector, and industry level.


Alphabetical Listing of Industries. The list below shows all the industries, sectors and categories that are profiled in this section. Abortion Policy/Anti-Abortion Abortion Policy/Pro-Abortion Rights Accountants Advertising/Public Relations Aerospace, Defense Contractors Agribusiness Agricultural Services & Products Agriculture Air Transport


InvestorGuide.com is the leading online guide to investing, with thousands of categorized links to financial and investing news, research, tools, and other resources.


Browse articles by industry - HBS Working Knowledge: The latest business management research and ideas from HBS faculty.


The sex industry is very controversial, and many people, organizations and governments have strong moral objections to it, and, as a result, pornography, prostitution, striptease and other similar occupations are illegal in many countries.


There are currently 11 sectors and 69 industries. Several of the 69 industries do not have companies represented in the S&P 500 Index; therefore, performance is not available for those industries. The number of industries that do not have representative stocks may vary over time.


There are different subsectors within each sector. In agriculture there will be farm, animal husbandry and allied areas. Similarly in industry there will be large, medium, small and cottage industries. Tertiary sector is an emerging area. Many new areas are included within service sector.


The tourism industry in Italy thrives on its many historic attractions, receiving millions of visitors each year. Rome is an especially popular city for tourists, offering world-famous destinations, such as the Colosseum, the Pantheon, Saint Peter’s Basilica and the Vatican museums.