A Turning Side Kick (also called momdollyo yopchagi) is a Side Kick that is performed after pivoting backward. It's similar to a Spinning Back Kick. In both cases, you first turn backward by lifting the rear leg, then as your rear leg comes around to kicking position for the target, you kick. Your rotation should end when your kick. In other words, this is not like a Tornado Kick where you continue to rotate even after the kick. All of the above is done as one swift movement. A Turning Side Kick appears in the form Pyongwon, for example.