unconscious vs insensible

unconscious is a noun but insensible is not a noun.

Word	Noun	Adjective	Verb	Adverb
unconscious	Yes	Yes	No	No
insensible	No	Yes	No	No

unconscious (noun)	insensible (noun)
that part of the mind wherein psychic activity takes place of which the person is unaware

unconscious (adjective)	insensible (adjective)
not conscious; lacking awareness and the capacity for sensory perception as if asleep or dead	incapable of physical sensation
without conscious volition	barely able to be perceived
(followed by `of') not knowing or perceiving	unresponsive to stimulation
	unaware of or indifferent to