Arianism vs unorthodoxy

Arianism and unorthodoxy both are nouns.

Word	Noun	Adjective	Verb	Adverb
Arianism	Yes	No	No	No
unorthodoxy	Yes	No	No	No

As nouns, unorthodoxy is a hypernym of Arianism; that is, unorthodoxy is a word with a broader meaning than Arianism:

Arianism: heretical doctrine taught by Arius that asserted the radical primacy of the Father over the Son
unorthodoxy: a belief that rejects the orthodox tenets of a religion

Other hypernyms of Arianism include heresy, theological doctrine.

Arianism (noun)	unorthodoxy (noun)
heretical doctrine taught by Arius that asserted the radical primacy of the Father over the Son	the quality of being unorthodox
	any opinions or doctrines at variance with the official or orthodox position
	a belief that rejects the orthodox tenets of a religion