prophet vs augur

prophet and augur both are nouns.

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

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

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

Other hyponyms of prophet include auspex, prophetess, sibyl.

prophet (noun)	augur (noun)
an authoritative person who divines the future	(ancient Rome) a religious official who interpreted omens to guide public policy
someone who speaks by divine inspiration; someone who is an interpreter of the will of God

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