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Players on the field per team	11		sports-football-rules-terms
Touchdown	Carrying or catching the ball in the end zone; worth 6 points		sports-football-rules-terms
Extra point (PAT)	A kick after a touchdown worth 1 point		sports-football-rules-terms
Two-point conversion	A run or pass after a touchdown worth 2 points		sports-football-rules-terms
Field goal	A kick through the uprights worth 3 points		sports-football-rules-terms
Safety	Tackling an offensive player with the ball in his own end zone; worth 2 points		sports-football-rules-terms
Down	One of four tries to move the ball 10 yards		sports-football-rules-terms
First down	A new set of four downs after gaining 10 yards		sports-football-rules-terms
Line of scrimmage	The imaginary line where the ball is placed before a play		sports-football-rules-terms
Snap	The center passes the ball back to start a play		sports-football-rules-terms
Quarterback	The player who throws or hands off the ball		sports-football-rules-terms
Running back	The player who runs with the ball		sports-football-rules-terms
Wide receiver	A player who runs routes to catch passes		sports-football-rules-terms
Tight end	A player who blocks and catches passes		sports-football-rules-terms
Offensive line	Five linemen who block for the offense		sports-football-rules-terms
Center	Offensive lineman who snaps the ball		sports-football-rules-terms
Guard	Offensive lineman next to the center		sports-football-rules-terms
Tackle (offense)	Offensive lineman at the end of the line		sports-football-rules-terms
Defensive line	Players who rush the passer and stop runs		sports-football-rules-terms
Linebacker	Defender behind the line who tackles and covers		sports-football-rules-terms
Cornerback	Defender who covers wide receivers		sports-football-rules-terms
Safety (position)	Deep defender who prevents long plays		sports-football-rules-terms
Kicker	The player who kicks field goals and extra points		sports-football-rules-terms
Punter	The player who kicks the ball away on fourth down		sports-football-rules-terms
Punt	A kick given up on fourth down to give the other team the ball far away		sports-football-rules-terms
Kickoff	The kick that starts each half and follows scores		sports-football-rules-terms
Touchback	The ball is downed in the end zone on a kick; the offense then starts at a set spot that the rules decide		sports-football-rules-terms
Fumble	Losing control of the ball while running		sports-football-rules-terms
Interception	A defender catches a pass thrown by the offense		sports-football-rules-terms
Sack	Tackling the quarterback behind the line of scrimmage		sports-football-rules-terms
Incomplete pass	A forward pass that hits the ground or goes out of bounds		sports-football-rules-terms
Completion	A caught forward pass		sports-football-rules-terms
Handoff	The quarterback gives the ball to a running back		sports-football-rules-terms
Huddle	Players gather to hear the play call		sports-football-rules-terms
Audible	A play change called at the line by the quarterback		sports-football-rules-terms
Blitz	Extra defenders rush the quarterback		sports-football-rules-terms
Penalty	A rule violation costing yards		sports-football-rules-terms
Offsides	A player crossing the line of scrimmage before the snap		sports-football-rules-terms
False start	An offensive player moves before the snap		sports-football-rules-terms
Holding	Illegally grabbing a player		sports-football-rules-terms
Pass interference	Illegally contacting a receiver trying to catch a pass		sports-football-rules-terms
Delay of game	Failing to snap the ball in time		sports-football-rules-terms
Roughing the passer	Hitting the quarterback late or too hard		sports-football-rules-terms
Flag	A yellow cloth thrown by referees to mark a penalty		sports-football-rules-terms
Field length	100 yards plus two 10-yard end zones		sports-football-rules-terms
End zone	The scoring area at each end of the field		sports-football-rules-terms
Goalposts	The yellow uprights where field goals are kicked		sports-football-rules-terms
Hash marks	Short lines marking where the ball is spotted		sports-football-rules-terms
Quarter length (NFL)	15 minutes		sports-football-rules-terms
Number of quarters	4		sports-football-rules-terms
Halftime	Break between the second and third quarters		sports-football-rules-terms
Overtime	Extra time when the score is tied		sports-football-rules-terms
Timeout	A stop in the clock		sports-football-rules-terms
Two-minute warning	A stop at 2 minutes left in each half (NFL)		sports-football-rules-terms
Super Bowl	NFL championship game, first played in 1967		sports-football-rules-terms
NFL	National Football League, formed 1920		sports-football-rules-terms
Heisman Trophy	Award for the best college football player		sports-football-rules-terms
Touchdown celebration	A celebration after scoring; keep it sporting		sports-football-rules-terms
Flag football	A non-contact version where players pull flags instead of tackling		sports-football-rules-terms
Tackle football	Players bring down runners with their bodies		sports-football-rules-terms
Spiral	A pass that spins tightly in flight		sports-football-rules-terms
Pocket	The protected area where the quarterback stands to pass		sports-football-rules-terms
Play-action	A fake handoff before a pass		sports-football-rules-terms
Screen pass	A short pass behind the line with blockers in front		sports-football-rules-terms
Hail Mary	A very long desperate pass in the last seconds		sports-football-rules-terms
Gridiron	Another word for a football field		sports-football-rules-terms
