mandibula vs submaxilla

mandibula and submaxilla both are nouns.

Word	Noun	Adjective	Verb	Adverb
mandibula	Yes	No	No	No
submaxilla	Yes	No	No	No

As nouns, mandibula and submaxilla are synonyms defined as:

mandibula and submaxilla: the jaw in vertebrates that is hinged to open the mouth

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

mandibula (noun)	submaxilla (noun)
the jaw in vertebrates that is hinged to open the mouth	the jaw in vertebrates that is hinged to open the mouth