augur vs oracle

augur and oracle both are nouns.

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

As nouns, oracle is a hypernym of augur; that is, oracle is a word with a broader meaning than augur:

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

Other hypernyms of augur include prophesier, prophet, seer, vaticinator.

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

augur (verb)	oracle (verb)
indicate, as with a sign or an omen
predict from an omen