oracle vs sibyl

oracle and sibyl both are nouns.

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

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

Other hyponyms of oracle include augur, auspex, prophetess.

oracle (noun)	sibyl (noun)
a shrine where an oracular god is consulted	(ancient Rome) a woman who was regarded as an oracle or prophet
a prophecy (usually obscure or allegorical) revealed by a priest or priestess; believed to be infallible	a woman who tells fortunes
an authoritative person who divines the future