prophetess vs prophesier

prophetess and prophesier both are nouns.

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

As nouns, prophesier is a hypernym of prophetess; that is, prophesier is a word with a broader meaning than prophetess:

Other hypernyms of prophetess include oracle, prophet, seer, vaticinator, adult female, woman.

prophetess (noun)	prophesier (noun)
a woman prophet	an authoritative person who divines the future