throw out vs blackball

throw out is not a noun while blackball is a noun.

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

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

throw out (noun)	blackball (noun)
	the act of excluding someone by a negative vote or veto

throw out (verb)	blackball (verb)
bring forward for consideration or acceptance	expel from a community or group
cease to consider; put out of judicial consideration	vote against; refuse to endorse; refuse to assent
throw or cast away
remove from a position or office
force to leave or move out