unperceptive vs unobservant

unperceptive and unobservant both are adjectives.

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

unperceptive (adjective)	unobservant (adjective)
lacking perception	not consciously observing
lacking sensitivity, taste, or judgment