adumbration vs prediction

adumbration and prediction both are nouns.

Word	Noun	Adjective	Verb	Adverb
adumbration	Yes	No	No	No
prediction	Yes	No	No	No

As nouns, prediction is a hypernym of adumbration; that is, prediction is a word with a broader meaning than adumbration:

adumbration: the act of providing vague advance indications; representing beforehand
prediction: the act of predicting (as by reasoning about the future)

Other hypernyms of adumbration include anticipation, prevision.

adumbration (noun)	prediction (noun)
a sketchy or imperfect or faint representation	the act of predicting (as by reasoning about the future)
the act of providing vague advance indications; representing beforehand	a statement made about the future