necromancy vs thaumaturgy

necromancy and thaumaturgy both are nouns.

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

As nouns, thaumaturgy is a hypernym of necromancy; that is, thaumaturgy is a word with a broader meaning than necromancy:

necromancy: the belief in magical spells that harness occult forces or evil spirits to produce unnatural effects in the world
thaumaturgy: any art that invokes supernatural powers

Other hypernyms of necromancy include magic.

necromancy (noun)	thaumaturgy (noun)
conjuring up the dead, especially for prophesying	an illusory feat; considered magical by naive observers
the belief in magical spells that harness occult forces or evil spirits to produce unnatural effects in the world	any art that invokes supernatural powers