Intentional grounding - when a quarterback throws the ball away to avoid being sacked. Penalty is 10 yards and loss of down, or, if QB was more than 10 yards behind the line of scrimmage the penalty is at the spot he was standing plus loss of down, or, if QB was in the endzone it s a safety. Offensive pass interference - when an offender interferes with a defender on a pass play. Penalty is 10 yards. Defensive pass interference - when a defender interferes with an offender on a pass play.
Penalty is marked wherever the infraction took place and is an automatic first down.
Unsportsmanlike conduct - any act that violates good sportsmanship. Penalty is 15 yards. Offside - when a player lines up with his hand or helmet on the other side of the ball. Penalty is 5 yards. There are numerous penalties in the professional ranks, some that are never called throughout an entire season.