accelerator vs car

accelerator and car both are nouns.

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

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