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.
Professional Sports
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.