countermand vs renege

countermand and renege both are nouns.

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

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

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

countermand (noun)	renege (noun)
a contrary command cancelling or reversing a previous command	the mistake of not following suit when able to do so

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