vacate vs renege on

vacate and renege on both are verbs.

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

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

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

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