insensible vs unconscious

insensible is not a noun while unconscious is a noun.

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

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

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