car vs accelerator

car and accelerator both are nouns.

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

car (noun)	accelerator (noun)
a motor vehicle with four wheels; usually propelled by an internal combustion engine	a valve that regulates the supply of fuel to the engine
a wheeled vehicle adapted to the rails of railroad	a scientific instrument that increases the kinetic energy of charged particles
where passengers ride up and down	a pedal that controls the throttle valve
the compartment that is suspended from an airship and that carries personnel and the cargo and the power plant	(chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected
a conveyance for passengers or freight on a cable railway