internment vs confinement

internment and confinement both are nouns.

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

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

internment (noun)	confinement (noun)
the act of confining someone in a prison (or as if in a prison)	the act of restraining of a person's liberty by confining them
placing private property in the custody of an officer of the law	the act of keeping something within specified bounds (by force if necessary)
confinement during wartime	the state of being confined
	concluding state of pregnancy; from the onset of contractions to the birth of a child