prophet vs sibyl

prophet and sibyl both are nouns.

Word	Noun	Adjective	Verb	Adverb
prophet	Yes	No	No	No
sibyl	Yes	No	No	No

As nouns, sibyl is a hyponym of prophet; that is, sibyl is a word with a more specific, narrower meaning than prophet:

Other hyponyms of prophet include augur, auspex, prophetess.

prophet (noun)	sibyl (noun)
an authoritative person who divines the future	(ancient Rome) a woman who was regarded as an oracle or prophet
someone who speaks by divine inspiration; someone who is an interpreter of the will of God	a woman who tells fortunes