A nation is a group of people who share the same culture, history, language or ethnicity. The word can also be used for the population of a country.

The word nation comes from a Latin language word meaning "birth" or "place of birth." The adjective is national.

Some nations are people with a particular belief, such as the Vatican City, or ethnic group, such as Armenia. Others share an idea, such as Democracy in the United States or Communism in China.