throw out vs close out

throw out and close out both are verbs.

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

As verbs, close out is a hyponym of throw out; that is, close out is a word with a more specific, narrower meaning than throw out:

throw out (verb)	close out (verb)
bring forward for consideration or acceptance	to finish off
cease to consider; put out of judicial consideration	terminate by selling off or disposing of
throw or cast away	make impossible, especially beforehand
remove from a position or office
force to leave or move out