nonconformity vs heresy

nonconformity and heresy both are nouns.

Word	Noun	Adjective	Verb	Adverb
nonconformity	Yes	No	No	No
heresy	Yes	No	No	No

As nouns, heresy is a hypernym of nonconformity; that is, heresy is a word with a broader meaning than nonconformity:

nonconformity: a lack of orthodoxy in thoughts or beliefs
heresy: any opinions or doctrines at variance with the official or orthodox position

Other hypernyms of nonconformity include heterodoxy, unorthodoxy.

nonconformity (noun)	heresy (noun)
failure to conform to accepted standards of behavior	a belief that rejects the orthodox tenets of a religion
unorthodoxy as a consequence of not conforming to expected standards or values	any opinions or doctrines at variance with the official or orthodox position
a lack of orthodoxy in thoughts or beliefs
lack of harmony or correspondence