achromia vs medical specialty

achromia and medical specialty both are nouns.

Word	Noun	Adjective	Verb	Adverb
achromia	Yes	No	No	No
medical specialty	Yes	No	No	No

achromia (noun)	medical specialty (noun)
an absence of normal pigmentation especially in the skin (as in albinism) or in red blood cells	the branches of medical science that deal with nonsurgical techniques