foreshadow vs augur

foreshadow is not a noun while augur is a noun.

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

As verbs, foreshadow and augur are synonyms defined as:

Other synonyms of foreshadow include auspicate, betoken, bode, forecast, foretell, omen, portend, predict, prefigure, presage, prognosticate.

foreshadow (noun)	augur (noun)
	(ancient Rome) a religious official who interpreted omens to guide public policy

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