chew the fat vs chatter

chew the fat is not a noun while chatter is a noun.

Word	Noun	Adjective	Verb	Adverb
chew the fat	No	No	Yes	No
chatter	Yes	No	Yes	No

As verbs, chew the fat and chatter are synonyms defined as:

chew the fat and chatter: talk socially without exchanging too much information

Other synonyms of chew the fat include chaffer, chat, chit-chat, chitchat, claver, confab, confabulate, gossip, jaw, natter, shoot the breeze, visit.

chew the fat (noun)	chatter (noun)
	noisy talk
	the high-pitched continuing noise made by animals (birds or monkeys)
	the rapid series of noises made by the parts of a machine

chew the fat (verb)	chatter (verb)
talk socially without exchanging too much information	speak (about unimportant matters) rapidly and incessantly
	talk socially without exchanging too much information
	make noise as if chattering away
	cut unevenly with a chattering tool
	click repeatedly or uncontrollably