consciousness vs cognisant

consciousness is a noun but cognisant is not a noun.

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

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

consciousness (adjective)	cognisant (adjective)
	(sometimes followed by `of') having or showing knowledge or understanding or realization or perception