jaw vs chasten

jaw is a noun but chasten is not a noun.

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

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

Other hyponyms of jaw include castigate, chastise, correct, objurgate, brush down, tell off.

jaw (noun)	chasten (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

jaw (verb)	chasten (verb)
talk socially without exchanging too much information	change by restraining or moderating
censure severely or angrily	correct by punishment or discipline
talk incessantly and tiresomely	censure severely
chew (food); to bite and grind with the teeth