skin disease vs skin disorder

skin disease and skin disorder both are nouns.

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

As nouns, skin disease and skin disorder are synonyms defined as:

Other synonyms of skin disease include disease of the skin.

skin disease (noun)	skin disorder (noun)
a disease affecting the skin	a disease affecting the skin