achromasia vs pallor

achromasia and pallor both are nouns.

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

As nouns, achromasia and pallor are synonyms defined as:

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

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

achromasia (noun)	pallor (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)