iconoclasm vs heterodoxy

iconoclasm and heterodoxy both are nouns.

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

As nouns, heterodoxy is a hypernym of iconoclasm; that is, heterodoxy is a word with a broader meaning than iconoclasm:

iconoclasm: the orientation of an iconoclast
heterodoxy: any opinions or doctrines at variance with the official or orthodox position

Other hypernyms of iconoclasm include heresy, unorthodoxy.

iconoclasm (noun)	heterodoxy (noun)
the orientation of an iconoclast	the quality of being unorthodox
	any opinions or doctrines at variance with the official or orthodox position