seer vs prophesier

seer and prophesier both are nouns.

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

As nouns, seer and prophesier are synonyms defined as:

Other synonyms of seer include oracle, prophet, vaticinator.

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