The natural unhinging of the wrists through impact that squares the clubface and delivers speed to the ball.
The setup position a golfer takes before starting the swing.
The first foot or two of the backswing, as the club first moves away from the ball.
The motion from address to the top, where the club is loaded before the downswing.
The highest, furthest point of the backswing, right before the downswing begins.
The change of direction from backswing to downswing.
The motion from the top of the backswing down through impact.