madness vs lividity

madness and lividity both are nouns.

Word	Noun	Adjective	Verb	Adverb
madness	Yes	No	No	No
lividity	Yes	No	No	No

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

Other hyponyms of madness include wrath.

madness (noun)	lividity (noun)
unrestrained excitement or enthusiasm	unnatural lack of color in the skin (as from bruising or sickness or emotional distress)
the quality of being rash and foolish	a state of fury so great the face becomes discolored
a feeling of intense anger
obsolete terms for legal insanity
an acute viral disease of the nervous system of warm-blooded animals (usually transmitted by the bite of a rabid animal); rabies is fatal if the virus reaches the brain