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"  OFFENSE: The 11 players who attempt to score. QUARTERBACK (QB): Receives the snap and passes the ball or hands it off. RUNNING BACK (RB): Gets handed the ball from the quarterback, then tries to run through all the defensive players. WIDE RECEIVER (WR): Catches the ball thrown by the quarterback. OFFENSIVE LINE: They keep the defense away. Line positions include the center (who snaps the ball into play), guards, and tackles. TIGHT END (TE): Either acts like an offensive lineman or catches the ball like a wide receiver. DEFENSE: The 11 players who attempt to stop the opposing team&amp;#039;s offense. DEFENSIVE LINE (D): The defensive ends and tackles who battle head-to-head against the offensive line. LINEBACKER (LB): A player who lines up behind the defensive line to tackle the quarterback or defend against the pass or run. DEFENSIVE BACK: The so-called secondary defends against the pass from the QB and helps stop the run. SPECIAL TEAMS: The players used in kicking situations (punts, field goals, kickoffs). KICKER: A player who tries to kick field goals. He&amp;#039;s also responsible for the kickoff. PUNTER: A player generally brought in to turn the ball over to the opposing team on the fourth down. RULES: During four 15-minute quarters, the offense tries to run, pass, or kick the ball into the end zone. KICKOFF: The kick that puts the ball into play to start the first and second halves, or after a touchdown or a field goal. TOUCHDOWN: OK, everyone knows this. It&amp;#039;s worth six points. EXTRA POINT: A kick, worth one point, that&amp;#039;s attempted after a touchdown. The ball must pass through the end zone&amp;#039;s goalposts. SAFETY: A score, worth two points, when an offensive ball carrier is tackled in his own end zone. TWO-POINT CONVERSION: After a touchdown, the offense can try to score two points by running or throwing the ball into the end zone. FIELD GOAL: A kick, worth three points. It&amp;#039;s usually tried on a fourth down from inside 45 yards of the goalposts. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.marieclaire.com/health-fitness/a7947/football-guide-football-101/>