rattle on vs jaw

rattle on is not a noun while jaw is a noun.

Word	Noun	Adjective	Verb	Adverb
rattle on	No	No	Yes	No
jaw	Yes	No	Yes	No

As verbs, rattle on and jaw are synonyms defined as:

Other synonyms of rattle on include yack, yack away, yap away.

rattle on (noun)	jaw (noun)
	holding device consisting of one or both of the opposing parts of a tool that close to hold an object
	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

rattle on (verb)	jaw (verb)
talk incessantly and tiresomely	talk socially without exchanging too much information
	censure severely or angrily
	talk incessantly and tiresomely
	chew (food); to bite and grind with the teeth