naysaying vs denial

naysaying and denial both are nouns.

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

As nouns, denial is a hypernym of naysaying; that is, denial is a word with a broader meaning than naysaying:

naysaying (noun)	denial (noun)
the act of saying no to a request	a defendant's answer or plea denying the truth of the charges against him
	renunciation of your own interests in favor of the interests of others
	the act of refusing to comply (as with a request)
	the act of asserting that something alleged is not true
	(psychiatry) a defense mechanism that denies painful thoughts