chitchat vs confabulation

chitchat and confabulation both are nouns.

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

As nouns, confabulation is a hypernym of chitchat; that is, confabulation is a word with a broader meaning than chitchat:

Other hypernyms of chitchat include chat, confab, schmoose, schmooze.

chitchat (noun)	confabulation (noun)
light informal conversation for social occasions	(psychiatry) a plausible but imagined memory that fills in gaps in what is remembered
	an informal conversation

chitchat (verb)	confabulation (verb)
talk socially without exchanging too much information