closet vs confine

closet is a noun but confine is not a noun.

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

As verbs, confine is a hypernym of closet; that is, confine is a word with a broader meaning than closet:

closet (noun)	confine (noun)
a small private room for study or prayer
a toilet in Britain
a tall piece of furniture that provides storage space for clothes; has a door and rails or hooks for hanging clothes
a small room (or recess) or cabinet used for storage space

closet (verb)	confine (verb)
confine to a small space, as for intensive work	place limits on (extent or amount or access)
	to close within bounds, or otherwise limit or deprive of free movement
	prevent from leaving or from being removed
	deprive of freedom; take into confinement
	close in