lividness vs achromasia

lividness and achromasia both are nouns.

Word	Noun	Adjective	Verb	Adverb
lividness	Yes	No	No	No
achromasia	Yes	No	No	No

As nouns, lividness and achromasia are synonyms defined as:

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

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

lividness (noun)	achromasia (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)