confinement vs subjection

confinement and subjection both are nouns.

Word	Noun	Adjective	Verb	Adverb
confinement	Yes	No	No	No
subjection	Yes	No	No	No

As nouns, subjection is a hypernym of confinement; that is, subjection is a word with a broader meaning than confinement:

Other hypernyms of confinement include subjugation.

confinement (noun)	subjection (noun)
the act of restraining of a person's liberty by confining them	the act of conquering
the act of keeping something within specified bounds (by force if necessary)	forced submission to control by others
the state of being confined
concluding state of pregnancy; from the onset of contractions to the birth of a child