chatter vs mouth

chatter and mouth both are nouns.

Word	Noun	Adjective	Verb	Adverb
chatter	Yes	No	Yes	No
mouth	Yes	No	Yes	No

As verbs, mouth is a hypernym of chatter; that is, mouth is a word with a broader meaning than chatter:

Other hypernyms of chatter include speak, talk, utter, verbalise, verbalize.

As verbs, mouth is a hypernym of chatter; that is, mouth is a word with a broader meaning than chatter:

Other hypernyms of chatter include speak, talk, utter, verbalise, verbalize.

chatter (noun)	mouth (noun)
noisy talk	the opening of a jar or bottle
the high-pitched continuing noise made by animals (birds or monkeys)	the externally visible part of the oral cavity on the face and the system of organs surrounding the opening
the rapid series of noises made by the parts of a machine	the opening through which food is taken in and vocalizations emerge
	an impudent or insolent rejoinder
	the point where a stream issues into a larger body of water
	an opening that resembles a mouth (as of a cave or a gorge)
	a person conceived as a consumer of food
	a spokesperson (as a lawyer)

chatter (verb)	mouth (verb)
speak (about unimportant matters) rapidly and incessantly	express in speech
talk socially without exchanging too much information	articulate silently; form words with the lips only
make noise as if chattering away	touch with the mouth
cut unevenly with a chattering tool
click repeatedly or uncontrollably