livid vs black-and-blue

livid and black-and-blue both are adjectives.

Word	Noun	Adjective	Verb	Adverb
livid	No	Yes	No	No
black-and-blue	No	Yes	No	No

As adjectives, livid and black-and-blue are synonyms defined as:

livid and black-and-blue: discolored by coagulation of blood beneath the skin

livid (adjective)	black-and-blue (adjective)
furiously angry	discolored by coagulation of blood beneath the skin
anemic looking from illness or emotion
discolored by coagulation of blood beneath the skin
(of a light) imparting a deathlike luminosity