throttle vs accelerator

throttle and accelerator both are nouns.

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

As nouns, throttle and accelerator are synonyms defined as:

throttle and accelerator: a valve that regulates the supply of fuel to the engine

Other synonyms of throttle include throttle valve.

As nouns, throttle and accelerator are synonyms defined as:

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

throttle (noun)	accelerator (noun)
a valve that regulates the supply of fuel to the engine	a valve that regulates the supply of fuel to the engine
a pedal that controls the throttle valve	a scientific instrument that increases the kinetic energy of charged particles
	a pedal that controls the throttle valve
	(chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected

throttle (verb)	accelerator (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