send for vs summon

send for and summon both are verbs.

Word	Noun	Adjective	Verb	Adverb
send for	No	No	Yes	No
summon	No	No	Yes	No

As verbs, summon is a hyponym of send for; that is, summon is a word with a more specific, narrower meaning than send for:

Other hyponyms of send for include cite, summons, beep, call back, recall, call in, lift, muster, hail, call up, mobilise, mobilize, rally.

send for (verb)	summon (verb)
order, request, or command to come	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