jaw vs jawbone

jaw and jawbone both are nouns.

Word	Noun	Adjective	Verb	Adverb
jaw	Yes	No	Yes	No
jawbone	Yes	No	Yes	No

As nouns, jawbone is a hyponym of jaw; that is, jawbone is a word with a more specific, narrower meaning than jaw:

jaw: the part of the skull of a vertebrate that frames the mouth and holds the teeth
jawbone: the jaw in vertebrates that is hinged to open the mouth

As verbs, jawbone is a hyponym of jaw; that is, jawbone is a word with a more specific, narrower meaning than jaw:

Other hyponyms of jaw include schmoose, schmooze, shmoose, shmooze.

jaw (noun)	jawbone (noun)
holding device consisting of one or both of the opposing parts of a tool that close to hold an object	the jaw in vertebrates that is hinged to open the mouth
the part of the skull of a vertebrate that frames the mouth and holds the teeth
the bones of the skull that frame the mouth and serve to open it; the bones that hold the teeth

jaw (verb)	jawbone (verb)
talk socially without exchanging too much information	talk idly or casually and in a friendly way
censure severely or angrily
talk incessantly and tiresomely
chew (food); to bite and grind with the teeth