throttle vs treadle

throttle and treadle both are nouns.

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

As nouns, treadle is a hypernym of throttle; that is, treadle is a word with a broader meaning than throttle:

Other hypernyms of throttle include foot lever, foot pedal, pedal.

throttle (noun)	treadle (noun)
a valve that regulates the supply of fuel to the engine	a lever that is operated with the foot
a pedal that controls the throttle valve

throttle (verb)	treadle (verb)
reduce the air supply	operate (machinery) by a treadle
place limits on (extent or amount or access)	tread over
kill by squeezing the throat of so as to cut off the air