unconsciousness vs unconscious

unconsciousness and unconscious both are nouns.

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

unconsciousness (noun)	unconscious (noun)
a state lacking normal awareness of the self or environment	that part of the mind wherein psychic activity takes place of which the person is unaware

unconsciousness (adjective)	unconscious (adjective)
	not conscious; lacking awareness and the capacity for sensory perception as if asleep or dead
	without conscious volition
	(followed by `of') not knowing or perceiving