pallor vs lividity

pallor and lividity both are nouns.

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

As nouns, pallor and lividity are synonyms defined as:

pallor and lividity: unnatural lack of color in the skin (as from bruising or sickness or emotional distress)

Other synonyms of pallor include achromasia, lividness, luridness, paleness, pallidness, wanness.

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