morbidness vs quality

morbidness and quality both are nouns.

Word	Noun	Adjective	Verb	Adverb
morbidness	Yes	No	No	No
quality	Yes	Yes	No	No

As nouns, quality is a hypernym of morbidness; that is, quality is a word with a broader meaning than morbidness:

morbidness (noun)	quality (noun)
the quality of being unhealthful and generally bad for you	an essential and distinguishing attribute of something or someone
an abnormally gloomy or unhealthy state of mind	(music) the distinctive property of a complex sound (a voice or noise or musical sound)
	a degree or grade of excellence or worth
	a characteristic property that defines the apparent individual nature of something
	high social status

morbidness (adjective)	quality (adjective)
	of superior grade
	of high social status