invocation vs summoning

invocation and summoning both are nouns.

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

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

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

Other hyponyms of invocation include evocation.

invocation (noun)	summoning (noun)
the act of appealing for help	calling up supposed supernatural forces by spells and incantations
calling up a spirit or devil
a prayer asking God's help as part of a religious service
an incantation used in conjuring or summoning a devil