adumbrative vs foreshadowing

adumbrative is not a noun while foreshadowing is a noun.

Word	Noun	Adjective	Verb	Adverb
adumbrative	No	Yes	No	No
foreshadowing	Yes	Yes	No	No

As adjectives, adumbrative and foreshadowing are synonyms defined as:

Other synonyms of adumbrative include prefigurative.

adumbrative (noun)	foreshadowing (noun)
	the act of providing vague advance indications; representing beforehand

adumbrative (adjective)	foreshadowing (adjective)
indistinctly prophetic	indistinctly prophetic