Punches to the head. Punches and kicks to the head are allowed. Points can be gained from a clear kick to the body guard or to the head. A clear sound of hitting the bodyguard must be heard. Points can be gained from a good kicks and punches to the opponent.
Terminology is different.
Hopefully I can add more information here soon. Links I finally decided to throw out most of the links that I had here, simply because I can't be bothered to keep them up to date.