confabulate vs hash out

confabulate and hash out both are verbs.

Word	Noun	Adjective	Verb	Adverb
confabulate	No	No	Yes	No
hash out	No	No	Yes	No

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

confabulate: have a conference in order to talk something over
hash out: speak with others about (something); talk (something) over in detail; have a discussion

Other hypernyms of confabulate include discuss, talk over.

confabulate (verb)	hash out (verb)
talk socially without exchanging too much information	speak with others about (something); talk (something) over in detail; have a discussion
have a conference in order to talk something over
unconsciously replace fact with fantasy in one's memory