black art vs sorcery

black art and sorcery both are nouns.

Word	Noun	Adjective	Verb	Adverb
black art	Yes	No	No	No
sorcery	Yes	No	No	No

As nouns, black art and sorcery are synonyms defined as:

black art and sorcery: the belief in magical spells that harness occult forces or evil spirits to produce unnatural effects in the world

Other synonyms of black art include black magic, necromancy.

black art (noun)	sorcery (noun)
the belief in magical spells that harness occult forces or evil spirits to produce unnatural effects in the world	the belief in magical spells that harness occult forces or evil spirits to produce unnatural effects in the world