In all codes of football, common elements include two teams of usually between 11 and 18 players, a clearly defined area in which to play the game, scoring goals or points by moving the ball to an opposing team's end of the field and either into a goal area, or over a line, goals or points resulting from players putting the ball between two goalposts, the goal or line being defended by the opposing team, and players using only their body to move the ball, i.e. no additional equipment such as bats or sticks.