leukoderma vs skin disease

leukoderma and skin disease both are nouns.

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

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

leukoderma: a congenital skin condition characterized by spots or bands of unpigmented skin
skin disease: a disease affecting the skin

Other hypernyms of leukoderma include disease of the skin, skin disorder.

leukoderma (noun)	skin disease (noun)
a congenital skin condition characterized by spots or bands of unpigmented skin	a disease affecting the skin