They are called "backs." Depending upon where they line up, they could be tailbacks, fullbacks or halfbacks (collectively referred to as "running backs"), flankers or H-backs (usually slotted as receivers), or the quarterback.
When they are five yards behind the line of scrimmage they call that the SHOTGUN formation.
When a defensive player tackles a quarterback behind the line of scrimmage as he is trying to throw the football .... that is called a sack.
In the NFL, there is no such thing as pass interference (PI) on forward passes that do not go past the line scrimmage but I recently watched a college football game in which a PI was called on a forward that never reached the line of scrimmage even though I always believed that there is no such thing as PI if such pass was in the backfield (behind the line of scrimmage). So I am not clear on the rule concerning passes that do not cross the line of scrimmage, in college football.
In American and Canadian Football, a ball can be passed forward from behind the line of scrimmage. If the ball falls on the ground it is called an incomplete pass. That means no one caught it. It can also be called an incomplete. That is a short way of saying "It is an incomplete forward pass."
I think it is called is a team of footballers-not sure(probably right though)
It depends on where the quarterback is standing in relation to the receiver. If the pass is forward, it is still a pass even if the receiver is behind the line of scrimmage. If the pass is backwards, it is considered a lateral and therefore a run.
scrimmage
Footballers in England are people who play football. In the US, they might be called soccer players.
150
Chile Chickens
finale
Footballers.