gas pedal vs throttle

gas pedal and throttle both are nouns.

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

As nouns, gas pedal and throttle are synonyms defined as:

Other synonyms of gas pedal include accelerator, accelerator pedal, gas, gun.

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

gas pedal (verb)	throttle (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