auto vs throttle

auto and throttle both are nouns.

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

auto (noun)	throttle (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 pedal that controls the throttle valve

auto (verb)	throttle (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