"Does unambiguous mean the same as biguous, and if so maybe ambiguous is the same as guous."

Ambiguous means that you are guous, but guous on both sides, much as ambidexeterous means that you're as good with your left hand as you are with your right (dexter being the right). Therefore, unambiguous means that you are not ambiguous, and are therefor guous. In the same way unambidexterous means that you are not ambidexterous, but not necessarily right-handed.

Clear?