deposition vs ousting

deposition and ousting both are nouns.

Word	Noun	Adjective	Verb	Adverb
deposition	Yes	No	No	No
ousting	Yes	No	No	No

As nouns, ousting is a hypernym of deposition; that is, ousting is a word with a broader meaning than deposition:

deposition: the act of deposing someone; removing a powerful person from a position or office
ousting: the act of ejecting someone or forcing them out

Other hypernyms of deposition include ouster.

deposition (noun)	ousting (noun)
the act of deposing someone; removing a powerful person from a position or office	the act of ejecting someone or forcing them out
the act of putting something somewhere
(law) a pretrial interrogation of a witness; usually conducted in a lawyer's office
the natural process of laying down a deposit of something