comatoseness vs comatose

comatoseness is a noun but comatose is not a noun.

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

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

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