stunned vs unconscious

stunned is not a noun while unconscious is a noun.

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

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

stunned (adjective)	unconscious (adjective)
in a state of mental numbness especially as resulting from shock	not conscious; lacking awareness and the capacity for sensory perception as if asleep or dead
filled with the emotional impact of overwhelming surprise or shock	without conscious volition
knocked unconscious by a heavy blow	(followed by `of') not knowing or perceiving