Gridiron football

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Gridiron football (football de grille), also known more rarely as North American football (football Nord-Américain) or, in North America, simply football, is a football sport primarily played in the United States and Canada.wikipedia
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Football

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Gridiron football (football de grille), also known more rarely as North American football (football Nord-Américain) or, in North America, simply football, is a football sport primarily played in the United States and Canada.
Sports commonly called football include association football (known as soccer in some countries); gridiron football (specifically American football or Canadian football); Australian rules football; rugby football (either rugby league or rugby union); and Gaelic football.

Eight-man football

8-man football8-maneight-man
Other derivative varieties include indoor football, football for smaller teams (most commonly eight players), and informal games such as touch and flag football.
Eight-man football is a form of gridiron football, generally played by high schools with smaller enrollments.

Canadian football

footballCanadianfootball player
American football, which uses 11-player teams, is the form played in the United States and the best known form of gridiron football worldwide, while Canadian football, featuring 12-player teams, predominates in Canada.
In Canada, the term "football" may refer to Canadian football and American football collectively, or to either sport specifically, depending on context; outside of Canada, the term Canadian football is used exclusively to describe this sport, even in the United States (the term gridiron football [or, more rarely, North American football] is also used worldwide as well to refer to both sports collectively).

American football

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American football, which uses 11-player teams, is the form played in the United States and the best known form of gridiron football worldwide, while Canadian football, featuring 12-player teams, predominates in Canada.
The two sports are considered the primary variants of gridiron football.

Football helmet

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Both varieties are distinguished from other football sports by their use of hard plastic helmets and shoulder pads, the forward pass, the system of downs, a number of unique rules and positions, measurement in customary units of yards (even in Canada, which mostly metricated in the 1970s, yards are still used), and a distinctive brown leather ball in the shape of a prolate spheroid with pointed ends; despite their similarities to each other, both variations of gridiron football's modern rules were developed separately from each other.
The football helmet is a piece of protective equipment used mainly in gridiron football.

Forward pass

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Both varieties are distinguished from other football sports by their use of hard plastic helmets and shoulder pads, the forward pass, the system of downs, a number of unique rules and positions, measurement in customary units of yards (even in Canada, which mostly metricated in the 1970s, yards are still used), and a distinctive brown leather ball in the shape of a prolate spheroid with pointed ends; despite their similarities to each other, both variations of gridiron football's modern rules were developed separately from each other. Among the most consequential changes was the adoption of the forward pass in 1906, which allowed the quarterback to throw the ball forward over the line of scrimmage to a receiver.
The forward pass is one of the main distinguishers between gridiron football (American football and Canadian football) in which the play is legal and widespread, and rugby football (union and league) from which the North American games evolved, in which the play is illegal.

Shoulder pads

shoulder padshoulder
Both varieties are distinguished from other football sports by their use of hard plastic helmets and shoulder pads, the forward pass, the system of downs, a number of unique rules and positions, measurement in customary units of yards (even in Canada, which mostly metricated in the 1970s, yards are still used), and a distinctive brown leather ball in the shape of a prolate spheroid with pointed ends; despite their similarities to each other, both variations of gridiron football's modern rules were developed separately from each other.
Shoulder pads are a piece of protective equipment used in many contact sports such as gridiron football, lacrosse and hockey.

Ball (gridiron football)

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Both varieties are distinguished from other football sports by their use of hard plastic helmets and shoulder pads, the forward pass, the system of downs, a number of unique rules and positions, measurement in customary units of yards (even in Canada, which mostly metricated in the 1970s, yards are still used), and a distinctive brown leather ball in the shape of a prolate spheroid with pointed ends; despite their similarities to each other, both variations of gridiron football's modern rules were developed separately from each other.
In Canada and in the United States, a football is a ball, roughly in the form of a prolate spheroid, used in the context of playing gridiron football.

College football

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By the 1860s, teams from universities were playing each other, leading to more standardized rules and the creation of college football.
College Football is gridiron football consisting of American football played by teams of student athletes fielded by American universities, colleges, and military academies, or Canadian football played by teams of student athletes fielded by Canadian universities.

Quarterback

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Among the most consequential changes was the adoption of the forward pass in 1906, which allowed the quarterback to throw the ball forward over the line of scrimmage to a receiver.
The quarterback (commonly abbreviated "QB"), colloquially known as the "signal caller", is a position in gridiron football.

Line of scrimmage

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Among the most consequential changes was the adoption of the forward pass in 1906, which allowed the quarterback to throw the ball forward over the line of scrimmage to a receiver.
In gridiron football, a line of scrimmage is an imaginary transverse line (across the width of the football field) beyond which a team cannot cross until the next play has begun.

Lineman (gridiron football)

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In gridiron football, a lineman is a player who specializes in play at the line of scrimmage.

Arena football

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Arena football is a variety of eight-man gridiron football.

Single (football)

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(Four-point field goals are available in a few variations of the game under special rules, but the NFL, college and high school football only offer three-point field goals.) In Canada, any kick that goes into the end zone and is not returned, whether it be a punt or a missed field goal, is awarded one single point.
There is one other way to score one point on a gridiron football play, other than a routine extra point.

Women's American football

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Women's gridiron football, more commonly known as women's American football, women's Canadian football, or simply women's football, is a form of gridiron football (American or Canadian) played by women.

List of female American football players

American professional female football playerscurrent scoring leader among women in the NCAAeligible to play
Women's gridiron football, more commonly known as women's American football, women's Canadian football, or simply women's football, is a form of gridiron football (American or Canadian) played by women.

Rugby football

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The sport originated in the 19th century out of older games related to modern rugby football, more specifically rugby league football.
In Canada and the United States, rugby developed into gridiron football.

Dead ball

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The team receiving the ball can make a fair catch (which stops the play immediately), catch the ball and run it back until the ball carrier is tackled, or, if the ball is kicked out of bounds, let the ball go dead on its own (the last case usually happens when the ball is kicked all the way into or through the opponent's end zone, resulting in a touchback and the ball being brought several yards out of the end zone to begin play).
In gridiron football, a dead ball is a condition that occurs between football plays, after one of the following has occurred:

Kickoff (gridiron football)

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Prior to the start of a game, a coin toss determines which team will kick off the ball to their opponent.
A kickoff is a method of starting a drive in gridiron football.

McGill University

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Meanwhile, McGill University in Montreal used rules based on rugby union.
The first game of North American football was played between McGill and Harvard on May 14, 1874, leading to the spread of American football throughout the Ivy League.

Onside kick

On-Side Kickonsideonsides kick
A kicking team can, under special circumstances, attempt to recover its own kick, but the rules of the game make it very difficult to do so reliably, and so this tactic is usually only used as a surprise or desperation maneuver.
In gridiron football, an onside kick is a kickoff deliberately kicked short.

Gridiron (cooking)

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This name originates with the sport's characteristic playing field, which is marked by a series of parallel lines along the width of the field in a pattern resembling a cooking gridiron.
The American football and Canadian football fields resembles a gridiron, which influenced the term "gridiron football".

Play from scrimmage

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At this point, play from scrimmage begins.
A play from scrimmage is the activity of the games of gridiron football during which one team tries to advance the ball, get a first down, or to score, and the other team tries to stop them or take the ball away.

Snap (gridiron football)

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Once the formation is set, the snapper snaps the ball to one of the players behind him.
A snap (colloquially called a "hike", "snapback", or "pass from center") is the backwards passing of the ball in gridiron football at the start of play from scrimmage.