consciousness vs conscious

consciousness is a noun but conscious is not a noun.

Word	Noun	Adjective	Verb	Adverb
consciousness	Yes	No	No	No
conscious	No	Yes	No	No

consciousness (noun)	conscious (noun)
an alert cognitive state in which you are aware of yourself and your situation
having knowledge of

consciousness (adjective)	conscious (adjective)
	knowing and perceiving; having awareness of surroundings and sensations and thoughts
	(followed by `of') showing realization or recognition of something
	intentionally conceived