American football
The rules :
American football is a game played between two teams of 11 players in each of the two teams. It’s a game with a complex strategy. A match of American football has four 15 minutes quarters with a half-time after the second quarter. The game clock stops frequently between plays.
In comparison a rugby match has two 40 minutes halves with a ten minutes half-time. The clock only stops for prolonged injuries. In a rugby match, a point is called an “essai” and in a football match it’s called a touchdown.