lividity vs skin colour

lividity and skin colour both are nouns.

Word	Noun	Adjective	Verb	Adverb
lividity	Yes	No	No	No
skin colour	Yes	No	No	No

As nouns, skin colour is a hypernym of lividity; that is, skin colour is a word with a broader meaning than lividity:

lividity: unnatural lack of color in the skin (as from bruising or sickness or emotional distress)
skin colour: the coloring of a person's face

Other hypernyms of lividity include complexion, skin color.

lividity (noun)	skin colour (noun)
unnatural lack of color in the skin (as from bruising or sickness or emotional distress)	the coloring of a person's face
a state of fury so great the face becomes discolored