invocation vs incantation

invocation and incantation both are nouns.

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

As nouns, incantation is a hypernym of invocation; that is, incantation is a word with a broader meaning than invocation:

invocation: an incantation used in conjuring or summoning a devil
incantation: a ritual recitation of words or sounds believed to have a magical effect

Other hypernyms of invocation include conjuration.

invocation (noun)	incantation (noun)
the act of appealing for help	a ritual recitation of words or sounds believed to have a magical effect
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