confab vs chitchat

confab and chitchat both are nouns.

Word	Noun	Adjective	Verb	Adverb
confab	Yes	No	Yes	No
chitchat	Yes	No	Yes	No

As nouns, chitchat is a hyponym of confab; that is, chitchat is a word with a more specific, narrower meaning than confab:

As verbs, confab and chitchat are synonyms defined as:

confab and chitchat: talk socially without exchanging too much information

confab (noun)	chitchat (noun)
an informal conversation	light informal conversation for social occasions

confab (verb)	chitchat (verb)
talk socially without exchanging too much information	talk socially without exchanging too much information
have a conference in order to talk something over