livedo vs disease of the skin

livedo and disease of the skin both are nouns.

Word	Noun	Adjective	Verb	Adverb
livedo	Yes	No	No	No
disease of the skin	Yes	No	No	No

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

livedo: skin disorder characterized by patchy bluish discolorations on the skin
disease of the skin: a disease affecting the skin

Other hypernyms of livedo include skin disease, skin disorder.

livedo (noun)	disease of the skin (noun)
skin disorder characterized by patchy bluish discolorations on the skin	a disease affecting the skin