Kussmaul's coma vs comatoseness

Kussmaul's coma and comatoseness both are nouns.

Word	Noun	Adjective	Verb	Adverb
Kussmaul's coma	Yes	No	No	No
comatoseness	Yes	No	No	No

As nouns, comatoseness is a hypernym of Kussmaul's coma; that is, comatoseness is a word with a broader meaning than Kussmaul's coma:

Kussmaul's coma: coma that can develop in inadequately treated cases of diabetes mellitus
comatoseness: a state of deep and often prolonged unconsciousness; usually the result of disease or injury

Other hypernyms of Kussmaul's coma include coma.

Kussmaul's coma (noun)	comatoseness (noun)
coma that can develop in inadequately treated cases of diabetes mellitus	a state of deep and often prolonged unconsciousness; usually the result of disease or injury