throttle vs foot pedal

throttle and foot pedal both are nouns.

Word	Noun	Adjective	Verb	Adverb
throttle	Yes	No	Yes	No
foot pedal	Yes	No	No	No

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

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

throttle (noun)	foot pedal (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)	foot pedal (verb)
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