summoning vs conjury

summoning and conjury both are nouns.

Word	Noun	Adjective	Verb	Adverb
summoning	Yes	No	No	No
conjury	Yes	No	No	No

As nouns, conjury is a hypernym of summoning; that is, conjury is a word with a broader meaning than summoning:

summoning: calling up supposed supernatural forces by spells and incantations
conjury: calling up a spirit or devil

Other hypernyms of summoning include conjuration, conjuring, invocation.

summoning (noun)	conjury (noun)
calling up supposed supernatural forces by spells and incantations	calling up a spirit or devil