vacate vs renege

vacate is not a noun while renege is a noun.

Word	Noun	Adjective	Verb	Adverb
vacate	No	No	Yes	No
renege	Yes	No	Yes	No

As verbs, renege is a hyponym of vacate; that is, renege is a word with a more specific, narrower meaning than vacate:

Other hyponyms of vacate include go back on, renege on, renegue on.

vacate (noun)	renege (noun)
	the mistake of not following suit when able to do so

vacate (verb)	renege (verb)
cancel officially	fail to fulfill a promise or obligation
leave behind empty; move out of
leave (a job, post, or position) voluntarily