oracle vs prophesier

oracle and prophesier both are nouns.

Word	Noun	Adjective	Verb	Adverb
oracle	Yes	No	No	No
prophesier	Yes	No	No	No

As nouns, oracle and prophesier are synonyms defined as:

Other synonyms of oracle include prophet, seer, vaticinator.

oracle (noun)	prophesier (noun)
a shrine where an oracular god is consulted	an authoritative person who divines the future
a prophecy (usually obscure or allegorical) revealed by a priest or priestess; believed to be infallible
an authoritative person who divines the future