Football is a family of team sports that involve, to varying degrees,
kicking a ball to score a goal. Unqualified, the word football normally
means the form of football that is the most popular where the word is
used. Sports commonly called football include association football
(known as soccer in North America and Oceania); gridiron football
(specifically American football or Canadian football); Australian rules
football; rugby union and rugby league; and Gaelic football. These
various forms of football share to varying extent common origins and are
known as "football codes".
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