inessential vs adscititious

inessential is a noun but adscititious is not a noun.

Word	Noun	Adjective	Verb	Adverb
inessential	Yes	Yes	No	No
adscititious	No	Yes	No	No

inessential (noun)	adscititious (noun)
anything that is not essential

inessential (adjective)	adscititious (adjective)
not basic or fundamental	added or derived from something outside; not inherent
not absolutely necessary	supplemental; not part of the real or essential nature of a thing