causerie vs confabulation

causerie and confabulation both are nouns.

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

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

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

causerie (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