summon vs call down

summon and call down both are verbs.

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

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

Other hyponyms of summon include arouse, bring up, call forth, conjure, conjure up, evoke, invoke, put forward, raise, stir.

summon (verb)	call down (verb)
make ready for action or use	censure severely or angrily
call in an official matter, such as to attend court	summon into action or bring into existence, often as if by magic
ask to come
gather or bring together
cause to become available for use, either literally or figuratively