jaw vs skull

jaw and skull both are nouns.

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

jaw (noun)	skull (noun)
holding device consisting of one or both of the opposing parts of a tool that close to hold an object	the bony skeleton of the head of vertebrates
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)	skull (verb)
talk socially without exchanging too much information
censure severely or angrily
talk incessantly and tiresomely
chew (food); to bite and grind with the teeth