call down vs curse

call down is not a noun while curse is a noun.

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

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

Other hyponyms of call down include anathemise, anathemize, bedamn, beshrew, damn, imprecate, maledict, bless.

call down (noun)	curse (noun)
	profane or obscene expression usually of surprise or anger
	an appeal to some supernatural power to inflict evil on someone or some group
	an evil spell
	a severe affliction
	something causing misery or death

call down (verb)	curse (verb)
censure severely or angrily	utter obscenities or profanities
summon into action or bring into existence, often as if by magic	wish harm upon; invoke evil upon
	heap obscenities upon
	exclude from a church or a religious community