cumber vs throttle

cumber is not a noun while throttle is a noun.

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

As verbs, throttle is a hypernym of cumber; that is, throttle is a word with a broader meaning than cumber:

cumber: restrict (someone or something) so as to make free movement difficult
throttle: place limits on (extent or amount or access)

Other hypernyms of cumber include bound, confine, limit, restrict, trammel.

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

cumber (verb)	throttle (verb)
restrict (someone or something) so as to make free movement difficult	reduce the air supply
	place limits on (extent or amount or access)
	kill by squeezing the throat of so as to cut off the air