For one, I would think that you would have to have a whole lot of stone tablets to fit all of the food laws, the feast laws, the holy day laws, the purification laws, etc., etc. You would need several arks of the covenant to contain all of those. The rest were written on parchment, but the stone tablets represented the Law. In answer to your original question, the ten commandments, along with the other 600 laws given, all belong to the laws that God gave to Moses to give to the Israelites, also called, the "Law of Moses" or "the Mosaic law."