exclusion vs blackball

exclusion and blackball both are nouns.

Word	Noun	Adjective	Verb	Adverb
exclusion	Yes	No	No	No
blackball	Yes	No	Yes	No

As nouns, blackball is a hyponym of exclusion; that is, blackball is a word with a more specific, narrower meaning than exclusion:

Other hyponyms of exclusion include defenestration, deportation, ostracism, barring, ouster, ousting.

exclusion (noun)	blackball (noun)
the act of forcing out someone or something	the act of excluding someone by a negative vote or veto
a deliberate act of omission
the state of being excluded
the state of being excommunicated

exclusion (verb)	blackball (verb)
	expel from a community or group
	vote against; refuse to endorse; refuse to assent