archpriest vs primate

archpriest and primate both are nouns.

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

As nouns, archpriest and primate are synonyms defined as:

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

archpriest (noun)	primate (noun)
a senior clergyman and dignitary	any placental mammal of the order Primates; has good eyesight and flexible hands and feet
	a senior clergyman and dignitary