temporomandibular joint vs mandibular joint

temporomandibular joint and mandibular joint both are nouns.

Word	Noun	Adjective	Verb	Adverb
temporomandibular joint	Yes	No	No	No
mandibular joint	Yes	No	No	No

As nouns, temporomandibular joint and mandibular joint are synonyms defined as:

temporomandibular joint and mandibular joint: the joint between the head of the lower jawbone and the temporal bone

Other synonyms of temporomandibular joint include articulatio temporomandibularis.

temporomandibular joint (noun)	mandibular joint (noun)
the joint between the head of the lower jawbone and the temporal bone	the joint between the head of the lower jawbone and the temporal bone