presage vs forecast

presage and forecast both are nouns.

Word	Noun	Adjective	Verb	Adverb
presage	Yes	No	Yes	No
forecast	Yes	No	Yes	No

As verbs, presage and forecast are synonyms defined as:

presage (noun)	forecast (noun)
a sign of something about to happen	a prediction about how something (as the weather) will develop
a foreboding about what is about to happen

presage (verb)	forecast (verb)
indicate, as with a sign or an omen	judge to be probable
	predict in advance
	indicate, as with a sign or an omen