exclusion vs ouster

exclusion and ouster both are nouns.

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

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

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

exclusion (noun)	ouster (noun)
the act of forcing out someone or something	the act of ejecting someone or forcing them out
a deliberate act of omission	a wrongful dispossession
the state of being excluded	a person who ousts or supplants someone else
the state of being excommunicated