obiism vs black art

obiism and black art both are nouns.

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

As nouns, black art is a hypernym of obiism; that is, black art is a word with a broader meaning than obiism:

obiism: belief in a kind of sorcery that originated in Africa and is practiced in the West Indies
black art: the belief in magical spells that harness occult forces or evil spirits to produce unnatural effects in the world

Other hypernyms of obiism include black magic, necromancy, sorcery.

obiism (noun)	black art (noun)
belief in a kind of sorcery that originated in Africa and is practiced in the West Indies	the belief in magical spells that harness occult forces or evil spirits to produce unnatural effects in the world