soothsaying vs prognostication

soothsaying and prognostication both are nouns.

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

As nouns, prognostication is a hypernym of soothsaying; that is, prognostication is a word with a broader meaning than soothsaying:

soothsaying: the art or gift of prophecy (or the pretense of prophecy) by supernatural means
prognostication: knowledge of the future (usually said to be obtained from a divine source)

Other hypernyms of soothsaying include prophecy, vaticination.

soothsaying (noun)	prognostication (noun)
the art or gift of prophecy (or the pretense of prophecy) by supernatural means	knowledge of the future (usually said to be obtained from a divine source)
	a statement made about the future
	a sign of something about to happen