renunciation vs denial

renunciation and denial both are nouns.

Word	Noun	Adjective	Verb	Adverb
renunciation	Yes	No	No	No
denial	Yes	No	No	No

As nouns, denial is a hyponym of renunciation; that is, denial is a word with a more specific, narrower meaning than renunciation:

renunciation: the act of renouncing; sacrificing or giving up or surrendering (a possession or right or title or privilege etc.)
denial: renunciation of your own interests in favor of the interests of others

Other hyponyms of renunciation include forsaking, giving up, abnegation, self-abnegation, self-denial, self-renunciation.

renunciation (noun)	denial (noun)
the act of renouncing; sacrificing or giving up or surrendering (a possession or right or title or privilege etc.)	a defendant's answer or plea denying the truth of the charges against him
an act (spoken or written) declaring that something is surrendered or disowned	renunciation of your own interests in favor of the interests of others
rejecting or disowning or disclaiming as invalid	the act of refusing to comply (as with a request)
the state of having rejected your religious beliefs for your political party or a cause (often in favor of opposing beliefs or causes)	the act of asserting that something alleged is not true
	(psychiatry) a defense mechanism that denies painful thoughts