confabulate vs cook up

confabulate and cook up both are verbs.

Word	Noun	Adjective	Verb	Adverb
confabulate	No	No	Yes	No
cook up	No	No	Yes	No

As verbs, cook up is a hypernym of confabulate; that is, cook up is a word with a broader meaning than confabulate:

Other hypernyms of confabulate include fabricate, invent, make up, manufacture.

confabulate (verb)	cook up (verb)
talk socially without exchanging too much information	concoct something artificial or untrue
have a conference in order to talk something over	prepare or cook by mixing ingredients
unconsciously replace fact with fantasy in one's memory