renege vs vacate

renege is a noun but vacate is not a noun.

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

As verbs, vacate is a hypernym of renege; that is, vacate is a word with a broader meaning than renege:

Other hypernyms of renege include annul, countermand, lift, overturn, repeal, rescind, reverse, revoke.

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

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