mandibular bone vs mandible

mandibular bone and mandible both are nouns.

Word	Noun	Adjective	Verb	Adverb
mandibular bone	Yes	No	No	No
mandible	Yes	No	No	No

As nouns, mandibular bone and mandible are synonyms defined as:

mandibular bone and mandible: the jaw in vertebrates that is hinged to open the mouth

Other synonyms of mandibular bone include jawbone, jowl, lower jaw, lower jawbone, mandibula, submaxilla.

mandibular bone (noun)	mandible (noun)
the jaw in vertebrates that is hinged to open the mouth	the jaw in vertebrates that is hinged to open the mouth