heterodoxy vs heresy

heterodoxy and heresy both are nouns.

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

As nouns, heterodoxy and heresy are synonyms defined as:

heterodoxy and heresy: any opinions or doctrines at variance with the official or orthodox position

Other synonyms of heterodoxy include unorthodoxy.

heterodoxy (noun)	heresy (noun)
the quality of being unorthodox	a belief that rejects the orthodox tenets of a religion
any opinions or doctrines at variance with the official or orthodox position	any opinions or doctrines at variance with the official or orthodox position