mindless vs amnesiac

mindless is not a noun while amnesiac is a noun.

Word	Noun	Adjective	Verb	Adverb
mindless	No	Yes	No	No
amnesiac	Yes	Yes	No	No

mindless (noun)	amnesiac (noun)
	a person suffering from amnesia

mindless (adjective)	amnesiac (adjective)
not mindful or attentive	suffering from a partial loss of memory
devoid of intelligence or thought
lacking the thinking capacity characteristic of a conscious being
requiring little mental effort
not marked by the use of reason