underpin vs jibe

underpin is not a noun while jibe is a noun.

Word	Noun	Adjective	Verb	Adverb
underpin	No	No	Yes	No
jibe	Yes	No	Yes	No

As verbs, jibe is a hypernym of underpin; that is, jibe is a word with a broader meaning than underpin:

underpin: support with evidence or authority or make more certain or confirm
jibe: be compatible, similar or consistent; coincide in their characteristics

Other hypernyms of underpin include agree, check, correspond, fit, gibe, match, tally.

underpin (noun)	jibe (noun)
	an aggressive remark directed at a person like a missile and intended to have a telling effect

underpin (verb)	jibe (verb)
support from beneath	shift from one side of the ship to the other
support with evidence or authority or make more certain or confirm	be compatible, similar or consistent; coincide in their characteristics