Volleyball is a team sport played by two teams separated by a net. It was invented in 1895 by William G. Morgan. The basic rules are to not let the ball hit the floor on your side of the net and to allow each team a maximum of three contacts before returning the ball over the net. Players rotate positions on the court after each serve. Key skills include serving, passing, setting, blocking, and hitting. Common volleyball terms refer to scoring points from serves, changing possession, and skilled defensive and offensive plays.