prognosticate vs foreshadow

prognosticate and foreshadow both are verbs.

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

As verbs, prognosticate and foreshadow are synonyms defined as:

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

prognosticate (verb)	foreshadow (verb)
make a prediction about; tell in advance	indicate, as with a sign or an omen
indicate, as with a sign or an omen