confine vs imprison

confine and imprison both are verbs.

Word	Noun	Adjective	Verb	Adverb
confine	No	No	Yes	No
imprison	No	No	Yes	No

As verbs, imprison is a hyponym of confine; that is, imprison is a word with a more specific, narrower meaning than confine:

confine (verb)	imprison (verb)
place limits on (extent or amount or access)	lock up or confine, in or as in a jail
to close within bounds, or otherwise limit or deprive of free movement	confine as if in a prison
prevent from leaving or from being removed
deprive of freedom; take into confinement
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