unperceptive vs blank

unperceptive is not a noun while blank is a noun.

Word	Noun	Adjective	Verb	Adverb
unperceptive	No	Yes	No	No
blank	Yes	Yes	Yes	No

unperceptive (noun)	blank (noun)
	a cartridge containing an explosive charge but no bullet
	a piece of material ready to be made into something
	a blank gap or missing part
	a blank character used to separate successive words in writing or printing

unperceptive (adjective)	blank (adjective)
lacking perception	(of a surface) not written or printed on
lacking sensitivity, taste, or judgment	not charged with a bullet
	complete and absolute
	without comprehension

unperceptive (verb)	blank (verb)
	keep the opposing (baseball) team from winning