Sport
A sport is an activity that involves skill and physical exertion and that is governed by a generally accepted set of rules and guidelines. Traditionally, the outcome of any such activity has a clear winner and loser as defined by the rules that govern that particular sport. The reasons that people engage in such activities vary but usually include a desire for competition, a wish to display one's skill and proficiency, and to engage in exercise. As well as serving as a form of recreation for those engaged in the activity, sports are often a form of entertainment for far more spectators than participants.
Many sports have been used as a form of entertainment that is run and promoted as a business. In these professional organizations, participants are paid for their participation in the sport. Spectators, in turn, pay for admission to view the event at an arena, stadium, or other such venue. Also, further revenues are generated through the various advertisers who may sponsor a Trophy or a Team or different sports gears.
A sport may be either individual (as in Tennis) or in groups (e.g., two players may form a doubles team in Tennis) or as a Team (e.g., the Davis Cup in Tennis is played among nations where usually there are four singles matches and a doubles match between two teams. A typical team game is football.
Also, there are games where a single player may play without another player. An example is Solitaire (American English) or Patience (British English) played with cards.