summoning vs summon

summoning is a noun but summon is not a noun.

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

summoning (noun)	summon (noun)
calling up supposed supernatural forces by spells and incantations

summoning (verb)	summon (verb)
	make ready for action or use
	call in an official matter, such as to attend court
	ask to come
	gather or bring together
	cause to become available for use, either literally or figuratively