incidence vs morbidity

incidence and morbidity both are nouns.

Word	Noun	Adjective	Verb	Adverb
incidence	Yes	No	No	No
morbidity	Yes	No	No	No

As nouns, morbidity is a hyponym of incidence; that is, morbidity is a word with a more specific, narrower meaning than incidence:

incidence (noun)	morbidity (noun)
the striking of a light beam on a surface	the quality of being unhealthful and generally bad for you
the relative frequency of occurrence of something	an abnormally gloomy or unhealthy state of mind
	the relative incidence of a particular disease