summoning vs conjuration

summoning and conjuration both are nouns.

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

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

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

Other hypernyms of summoning include conjuring, conjury, invocation.

summoning (noun)	conjuration (noun)
calling up supposed supernatural forces by spells and incantations	an illusory feat; considered magical by naive observers
	calling up a spirit or devil
	a ritual recitation of words or sounds believed to have a magical effect