demonism vs sorcery

demonism and sorcery both are nouns.

Word	Noun	Adjective	Verb	Adverb
demonism	Yes	No	No	No
sorcery	Yes	No	No	No

As nouns, sorcery is a hypernym of demonism; that is, sorcery is a word with a broader meaning than demonism:

demonism: a belief in and reverence for devils (especially Satan)
sorcery: the belief in magical spells that harness occult forces or evil spirits to produce unnatural effects in the world

Other hypernyms of demonism include black art, black magic, necromancy.

demonism (noun)	sorcery (noun)
a belief in and reverence for devils (especially Satan)	the belief in magical spells that harness occult forces or evil spirits to produce unnatural effects in the world