accelerator pedal vs gas pedal

accelerator pedal and gas pedal both are nouns.

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

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

accelerator pedal and gas pedal: a pedal that controls the throttle valve

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

accelerator pedal (noun)	gas pedal (noun)
a pedal that controls the throttle valve	a pedal that controls the throttle valve