comatose vs comatoseness

comatose is not a noun while comatoseness is a noun.

Word	Noun	Adjective	Verb	Adverb
comatose	No	Yes	No	No
comatoseness	Yes	No	No	No

comatose (noun)	comatoseness (noun)
	a state of deep and often prolonged unconsciousness; usually the result of disease or injury

comatose (adjective)	comatoseness (adjective)
relating to or associated with a coma
in a state of deep and usually prolonged unconsciousness; unable to respond to external stimuli