oracle vs auspex

oracle and auspex both are nouns.

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

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

oracle: an authoritative person who divines the future
auspex: (ancient Rome) a religious official who interpreted omens to guide public policy

Other hyponyms of oracle include augur, prophetess, sibyl.

oracle (noun)	auspex (noun)
a shrine where an oracular god is consulted	(ancient Rome) a religious official who interpreted omens to guide public policy
a prophecy (usually obscure or allegorical) revealed by a priest or priestess; believed to be infallible
an authoritative person who divines the future