augur vs forebode

augur is a noun but forebode is not a noun.

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

As verbs, forebode is a hypernym of augur; that is, forebode is a word with a broader meaning than augur:

Other hypernyms of augur include anticipate, call, foretell, predict, prognosticate, promise.

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

augur (verb)	forebode (verb)
indicate, as with a sign or an omen	make a prediction about; tell in advance
predict from an omen