Mandible is the largest and strongest bone of the face. It has a U shape and is also referred to as the inferior maxillary bone.
It joins the mandibular fossa which contains an articular disk which allows for smooth hinge and sliding motion. The mandibular fossa is the depression in the temporal bone that articulates with the mandibular condyle, forming the temporomandibular joint which is a synovial joint that can be felt from within the ear canal.
The mandible is what forms the lower jaw and along with the maxilla forms the mouth.