throttle vs confine

throttle is a noun but confine is not a noun.

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

As verbs, throttle and confine are synonyms defined as:

Other synonyms of throttle include bound, limit, restrict, trammel.

throttle (noun)	confine (noun)
a valve that regulates the supply of fuel to the engine
a pedal that controls the throttle valve

throttle (verb)	confine (verb)
reduce the air supply	place limits on (extent or amount or access)
place limits on (extent or amount or access)	to close within bounds, or otherwise limit or deprive of free movement
kill by squeezing the throat of so as to cut off the air	prevent from leaving or from being removed
	deprive of freedom; take into confinement
	close in