necromancy vs obiism

necromancy and obiism both are nouns.

Word	Noun	Adjective	Verb	Adverb
necromancy	Yes	No	No	No
obiism	Yes	No	No	No

As nouns, obiism is a hyponym of necromancy; that is, obiism is a word with a more specific, narrower meaning than necromancy:

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

Other hyponyms of necromancy include witchcraft, witchery, bewitchment, enchantment, demonism, diabolism, Satanism.

necromancy (noun)	obiism (noun)
conjuring up the dead, especially for prophesying	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