Rule 2, Section 13, Article 1

Force is the result of energy exerted by a player which provides movement of the ball. The term force is used only in connection with the goal line and in only one direction, i.e., from the field of play into the end zone. Initial force results from a carry, fumble, kick, pass or snap. After a fumble, kick or backward pass has been grounded, a new force may result from a bat an illegal kick or a muff.

Rule 2, Section 10, Article 2

The field of play is the area within the boundary lines and the goal lines.

Rule 2, Section 2 BATTING

Batting is intentionally slapping or striking the ball with the arm or hand.

Rule 2, Section 22 HURDLING

Hurdling is an an attempt by a player to jump (hurdle) with one or both feet or knees foremost over an opponent who is contacting the ground with no part of his body except one or both feet.

Rule 2, Section 27 Muff

A muff is the touching of a loose ball by a player in an unsuccessful attempt to secure possession.

Rule 2, Section 4, Article 1

A catch is the act of establishing player possession of a live ball which is in flight, and first contacting the ground inbounds while maintaining possession of the ball or having forward progress of the player in possession stopped while the opponent is carrying the player who is in possession and inbounds.