cite vs summon

cite is a noun but summon is not a noun.

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

As verbs, cite and summon are synonyms defined as:

Other synonyms of cite include summons.

cite (noun)	summon (noun)
a short note recognizing a source of information or of a quoted passage

cite (verb)	summon (verb)
make reference to	make ready for action or use
commend	call in an official matter, such as to attend court
repeat a passage from	ask to come
refer to for illustration or proof	gather or bring together
advance evidence for	cause to become available for use, either literally or figuratively
call in an official matter, such as to attend court
refer to