Football

Football is the word given to a number of similar team sports, all of which involve (to varying degrees) kicking a ball with the foot in an attempt to score a goal. The most popular of these sports worldwide is association football, more commonly known as just "football" or "soccer". The English language word "football" is also applied to "gridiron football" (a name associated with the North American sports, especially American football and Canadian football), Australian football, Gaelic football, rugby football (rugby league and rugby union), and related games. Each of these codes (specific sets of rules, or the games defined by them) is referred to as "football".

These games involve:
* Two teams of usually between 11 and 18 players; some variations that have fewer players (five or more per team) are also popular
* a clearly defined area in which to play the game;
* scoring goals and/or points, by moving the ball to an opposing team's end of the field and either into a goal area, or over a line;
* the goal and/or line being defended by the opposing team;
* players being required to move the ball—depending on the code—by kicking, carrying and/or hand passing the ball; and
* goals and/or points resulting from players putting the ball between two goalposts.

In most codes, there are rules restricting the movement of players offside, and players scoring a goal must put the ball either under or over a crossbar between the goalposts. Other features common to several football codes include: points being mostly scored by players carrying the ball across the goal line and; players receiving a free kick after they take a mark/make a fair catch.Peoples from around the world have played games which involved kicking and/or carrying a ball, since ancient times. However, most of the modern codes of football have their origins in England.

While it is widely believed that the word "football" (or "foot ball") originated in reference to the action of the foot kicking a ball, there is a rival explanation, which has it that football originally referred to a variety of games in medieval Europe, which were played on foot. These games were usually played by peasants, as opposed to the horse-riding sports often played by aristocrats. While there is no conclusive evidence for this explanation, the word football has always implied a variety of games played on foot, not just those that involved kicking a ball. In some cases, the word football has even been applied to games which have specifically outlawed kicking the ball.

During this period, the Rugby school rules appear to have spread at least as far, perhaps further, than the other schools' codes. For example, two clubs which claim to be the world's first and/or oldest football club, in the sense of a club which is not part of a school or university, are strongholds of rugby football: the Barnes Club, said to have been founded in 1839, and Guy's Hospital Football Club, in 1843. Neither date nor the variety of football played is well-documented, but such claims nevertheless allude to the popularity of rugby before other modern codes emerged.

In 1845, three boys at Rugby school were tasked with codifying the rules then being used at the school. These were the first set of written rules (or code) for any form of football. This further assisted the spread of the Rugby game. For instance, Dublin University Football Club — founded at Trinity College, Dublin in 1854 and later famous as a bastion of the Rugby School game — is the world's oldest documented football club in any code.

The longest running football fixture is the Cordner-Eggleston Cup, contested between Melbourne Grammar School and Scotch College, Melbourne every year since 1858. It is believed by many to also be the first match of Australian rules football, although it was played under experimental rules in its first year. The first football trophy tournament was the Caledonian Challenge Cup, donated by the Royal Caledonian Society of Melbourne, played in 1861 under the Melbourne Rules. The oldest football league is a rugby football competition, the United Hospitals Challenge Cup (1874), while the oldest rugby trophy is the Rugby League Challenge Cup (1897). The South Australian Football Association (30 April 1877) is the oldest surviving Australian rules football competition. The oldest surviving soccer trophy is the Youdan Cup (1867) and the oldest national soccer competition is the English FA Cup (1871). The Football League (1888) is recognised as the longest running Association Football league.