Pass Interference is when the cornerback interferes with the receiver when the receiver is thrown the ball. This can be called on the receiver or defensive back and the ball is placed at the spot of the penalty.
Offsides can happen on either side of the ball and this is where a player has a body part over the line of scrimmage. This penalty gives five yards to the opposing team and is a replay of the down.
Facemask penalties can happen on either side of the ball and this occurs when a player grabs an opposing players facemask. This penalty is 15 yards fowards or backwards depending on the whether or not it happened on the offense or defense.