Ball in and out of play

Under the Laws, the two basic states of play during a game are ball in play and ball out of play. From the beginning of each playing period with a kick-off until the end of the playing period, the ball is in play at all times, except when either the ball leaves the field of play, or play is stopped by the referee. When the ball becomes out of play, play is restarted by one of eight restart methods depending on how it went out of play:

A player takes a free kick, while the opposition form a "wall" in order to try to deflect the ballKick-off: following a goal by the opposing team, or to begin each period of play.
Throw-in: when the ball has crossed the touchline; awarded to opposing team to that which last touched the ball.
Goal kick: when the ball has wholly crossed the goal line without a goal having been scored and having last been touched by a player of the attacking team; awarded to defending team.
Corner kick: when the ball has wholly crossed the goal line without a goal having been scored and having last been touched by a player of the defending team; awarded to attacking team.
Indirect free kick: awarded to the opposing team following "non-penal" fouls, certain technical infringements, or when play is stopped to caution or send-off an opponent without a specific foul having occurred. A goal may not be scored directly from an indirect free kick.
Direct free kick: awarded to fouled team following certain listed "penal" fouls. A goal may be scored directly from a direct free kick.
Penalty kick: awarded to the fouled team following a foul usually punishable by a direct free kick but that has occurred within their opponent's penalty area.
Dropped-ball: occurs when the referee has stopped play for any other reason, such as a serious injury to a player, interference by an external party, or a ball becoming defective. This restart is uncommon in adult games.

A player takes a free kick, while the opposition form a "wall" in order to try to deflect the ball