basketball

Basketball is a teams port 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. Basketball is one of the most popular and widely viewed sports  in the world. A regulation basketball hoop consists of a rim 18 inches in diameter and 10 feet  high mounted to a backboard. A team can score a field goal by shooting the ball through the hoop during regular play. A fieldgoal scores two points for the shooting team if a player is touching or closer to the hoop than the threepoint, and three points  if the player is  outside  the three-point line. The team with more points at the end of the game wins, but additional time  may be issued when the game ends with a tie. The ball can be advanced on the court by bouncing it while walking or running dribbling or passing it to a teammate. It is a violation travling  to walk with the ball, carry it, or to doubledribble (to hold the ball and then resume dribbling).

volley ball

Volleyball is an team sport in which two teams of six players are separated by a net. Each team tries to score points by grounding a ball on the other team's court under organized rules. A player on one of the teams begins a 'rally' by serving the ball ,from behind the back boundary line of the court, over the net, and into the receiving team's court. The receiving team must not let the ball be grounded within their court. They may touch the ball as many as three times. Typically, the first two touches are to set up for an attack, an attempt to direct the ball back over  the net in such a way that the serving team is unable to prevent it from being grounded in their court. The rally continues, with each team allowed as many as three consecutive touches.The team that wins the rally is awarded a point, and serves the ball to start the next rally. 

football

Sports is an organized, competitive, entertaining, and skillful activity requiring commitment, strategy, and fair play, in which a winner can be defined by objective means.
  Football  is a ball used to play one of the various sports known as football.The game of football is any of several similar team sports, of similar origins 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 game is played on a rectangular field of grass or green artificial turf, with a goal in the middle of each of the short ends. The object of the game is to score by driving the ball into the opposing goal. In general play, the goalkeepers are the only players allowed to touch the ball with their hands or arms, while the field players typically use their feet to kick the ball into position, occasionally using their torso or head to intercept a ball in midair. 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.