call-out vs call out

call-out is a noun but call out is not a noun.

Word	Noun	Adjective	Verb	Adverb
call-out	Yes	No	No	No
call out	No	No	Yes	No

call-out (noun)	call out (noun)
a challenge to a fight or duel

call-out (verb)	call out (verb)
	call out loudly, as of names or numbers
	utter aloud; often with surprise, horror, or joy
	challenge to a duel