call down vs summon

call down and summon both are verbs.

Word	Noun	Adjective	Verb	Adverb
call down	No	No	Yes	No
summon	No	No	Yes	No

As verbs, summon is a hypernym of call down; that is, summon is a word with a broader meaning than call down:

Other hypernyms of call down include call up.

call down (verb)	summon (verb)
censure severely or angrily	make ready for action or use
summon into action or bring into existence, often as if by magic	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