archpriest vs prelate

archpriest and prelate both are nouns.

Word	Noun	Adjective	Verb	Adverb
archpriest	Yes	No	No	No
prelate	Yes	No	No	No

As nouns, archpriest and prelate are synonyms defined as:

Other synonyms of archpriest include hierarch, high priest, primate.

archpriest (noun)	prelate (noun)
a senior clergyman and dignitary	a senior clergyman and dignitary