While a culture is a collection of ideas, beliefs, practices, and world-views that a group of people share, a sub-culture is a refinment of definition of a culture. Sub-cultures in the US include goths, geeks, nerds, preps, fraternity and sorority people, mundanes, fishermen, adrenaline junkies, gamers, musicians, intellectuals, college students, high school students, people of a particular religion, and people of a particular ethnic group.