presage vs prognostication

presage and prognostication both are nouns.

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

As nouns, presage and prognostication are synonyms defined as:

Other synonyms of presage include omen, portent, prodigy, prognostic.

presage (noun)	prognostication (noun)
a sign of something about to happen	knowledge of the future (usually said to be obtained from a divine source)
a foreboding about what is about to happen	a statement made about the future
	a sign of something about to happen

presage (verb)	prognostication (verb)
indicate, as with a sign or an omen