gun vs accelerator pedal

gun and accelerator pedal both are nouns.

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

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

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

gun (noun)	accelerator pedal (noun)
the discharge of a firearm as signal or as a salute in military ceremonies	a pedal that controls the throttle valve
a weapon that discharges a missile at high velocity (especially from a metal tube or barrel)
large but transportable armament
a hand-operated pump that resembles a pistol; forces grease into parts of a machine
a pedal that controls the throttle valve
a professional killer who uses a gun
a person who shoots a gun (as regards their ability)

gun (verb)	accelerator pedal (verb)
shoot with a gun