College football is American football played by teams of student athletes fielded by American universities, colleges, and military academies, or Canadian football played by teams of student athletes fielded by Canadian universities. It was through college football play that American football rules first gained popularity in the United States.
In American football a play is a close to the ground "plan of action" or "strategy" used to move the ball down the field. A play occurs at either the snap from the center or at kickoff. Most commonly plays occur at the snap during a down. These plays vary between basic to very complicated. Football players keep a record of these plays in their playbook.
In American and Canadian football, an onside kick is a free kick(kickoff) that is kicked with the intention to be recovered by the kicking team. An onside kick is generally attempted when a team is trying to make a comeback late in a game.
American football and Canadian football originate in rugby football, and so does the onside kick. In rugby, while the forward pass is prohibited, a team in possession may legally kick the ball downfield and recapture possession, provided that the receiver of the kick was onside when the kick was made (i.e., abreast with or behind the kicker.)
Association football, commonly known as soccer or football, is a sport played between two teams of eleven players with a spherical ball. It is played by 250 million players in over 200 countries, making it the world's most popular sport. The game is played on a rectangular field with a goal at each end. The object of the game is to score by using any part of the body besides the arms and hands to get the football into the opposing goal.
The goalkeepers are the only players allowed to touch the ball with their hands or arms while it is in play and then only in their penalty area. Outfield players mostly use their feet to strike or pass the ball, but may use their head or torso to strike the ball instead. The team that scores the most goals by the end of the match wins. If the score is tied at the end of the game, either a draw is declared or the game goes into extra time and/or a penalty shootout depending on the format of the competition. The Laws of the Game were originally codified in England by The Football Association in 1863. Association football is governed internationally by the International Federation of Association Football (FIFA; French: Fédération Internationale de Football Association) which organises a World Cup every four years.