closeout vs close out

closeout is a noun but close out is not a noun.

Word	Noun	Adjective	Verb	Adverb
closeout	Yes	No	No	No
close out	No	No	Yes	No

closeout (noun)	close out (noun)
a sale intended to dispose of all remaining stock

closeout (verb)	close out (verb)
	to finish off
	terminate by selling off or disposing of
	make impossible, especially beforehand