Unbalanced line – This is a formation of an offensive line where center has unequal number of linemen on each side.
Audible – A football play that is called out or chagned by the qurterback at the line of scrimmage. Quarterback deems it necessary to change the play by reading defense formation.
Back – this term usually referring to (fullback, halfback, wingback, H-back)
Backfield – this is referring to any area behind the line of scrimmage.
Balanced Line – an offensive formation of football in which there are even number of offensive linemen on each side of the center.
Ball Carrier – A football player who is either running with ball or in possession of.