chuck vs jaw

chuck and jaw both are nouns.

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

chuck (noun)	jaw (noun)
a holding device consisting of adjustable jaws that center a workpiece in a lathe or center a tool in a drill	holding device consisting of one or both of the opposing parts of a tool that close to hold an object
the part of a forequarter from the neck to the ribs and including the shoulder blade	the part of the skull of a vertebrate that frames the mouth and holds the teeth
informal terms for a meal	the bones of the skull that frame the mouth and serve to open it; the bones that hold the teeth

chuck (verb)	jaw (verb)
eject the contents of the stomach through the mouth	talk socially without exchanging too much information
throw carelessly	censure severely or angrily
pat or squeeze fondly or playfully, especially under the chin	talk incessantly and tiresomely
throw away	chew (food); to bite and grind with the teeth