rescind vs renege

rescind is not a noun while renege is a noun.

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

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

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

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

rescind (verb)	renege (verb)
cancel officially	fail to fulfill a promise or obligation