acanthosis vs skin disorder

acanthosis and skin disorder both are nouns.

Word	Noun	Adjective	Verb	Adverb
acanthosis	Yes	No	No	No
skin disorder	Yes	No	No	No

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

acanthosis: an abnormal but benign thickening of the prickle-cell layer of the skin (as in psoriasis)
skin disorder: a disease affecting the skin

Other hypernyms of acanthosis include disease of the skin, skin disease.

acanthosis (noun)	skin disorder (noun)
an abnormal but benign thickening of the prickle-cell layer of the skin (as in psoriasis)	a disease affecting the skin