Football is a family of team sports that involve, to varying degrees, kicking a ball with the foot to score a goal. Unqualified, the word football is understood to refer to whichever form of football is the most popular in the regional context in which the word appears. Sports commonly called 'football' in certain places include: association football; gridiron football; Australian rules football; rugby football; and Gaelic football. These different variations of football are known as football codes.
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