foreshow vs prognosticate

foreshow and prognosticate both are verbs.

Word	Noun	Adjective	Verb	Adverb
foreshow	No	No	Yes	No
prognosticate	No	No	Yes	No

As verbs, prognosticate is a hypernym of foreshow; that is, prognosticate is a word with a broader meaning than foreshow:

Other hypernyms of foreshow include augur, auspicate, betoken, bode, forecast, foreshadow, foretell, omen, portend, predict, prefigure, presage.

foreshow (verb)	prognosticate (verb)
foretell by divine inspiration	make a prediction about; tell in advance
	indicate, as with a sign or an omen