prophesier vs seer

prophesier and seer both are nouns.

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

As nouns, prophesier and seer are synonyms defined as:

Other synonyms of prophesier include oracle, prophet, vaticinator.

prophesier (noun)	seer (noun)
an authoritative person who divines the future	a person with unusual powers of foresight
	an authoritative person who divines the future
	an observer who perceives visually