Basketball is a ball game and team sport in which two teams of five players try to score points by throwing or "shooting" a ball through the top of a basketball hoop while following a set of rules. Since being developed by James Naismith as a non-contact game that almost anyone can play, basketball has undergone many different rule variations, eventually evolving into the NBA-style game known today. Basketball is one of the most popular and widely viewed sports in the world. Definition Exercise – bodily activity that enhances or maintains physical fitness and overall health or wellness. Game – structured activity, usually undertaken for enjoyment and sometimes used as an educational tool. Games are distinct from work, which is usually carried out for remuneration, and from art, which is more concerned with the expression of ideas. However, the distinction is not clear-cut, and many games are also considered to be work (such as professional sports). Ball game – game played with a ball. Sport – form of physical activity which, through casual or organised participation, aim to use, maintain or improve physical fitness and provide entertainment to participants. Competitive sport – sport in which one or more participants or teams compete against one another. The one that is the most successful in achieving the objective of the game or sport event is the winner. Team sport – sport that involves players working together towards a shared objective. Recreational sport – sport engaged in as a leisure time activity. Spectator sport – sport that is characterized by the presence of spectators, or watchers, at its matches. Spectator sports are a form of entertainment. Professional sport – sport in which the athletes receive payment for their performance. Equipment of the game Basketball – inflated ball used in the game of basketball. Basketballs typically range in size from very small promotional items possibly only a few inches in diameter to extra large balls nearly a foot in diameter used in training exercises to increase the skill of players. The standard size of a basketball for men's competitive play is 29.5 inches in circumference; for women's competitive play, the circumference is 28.5 inches. All competitions in the halfcourt game of 3x3, whether men's, women's, or mixed-sex, use a dedicated ball with the circumference of the women's ball but the weight of the men's ball. Rock – the ball Basketball court – the playing