vaticinator vs prophesier

vaticinator and prophesier both are nouns.

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

As nouns, vaticinator and prophesier are synonyms defined as:

vaticinator and prophesier: an authoritative person who divines the future

Other synonyms of vaticinator include oracle, prophet, seer.

vaticinator (noun)	prophesier (noun)
an authoritative person who divines the future	an authoritative person who divines the future