throttle vs fuel system

throttle and fuel system both are nouns.

Word	Noun	Adjective	Verb	Adverb
throttle	Yes	No	Yes	No
fuel system	Yes	No	No	No

throttle (noun)	fuel system (noun)
a valve that regulates the supply of fuel to the engine	equipment in a motor vehicle or aircraft that delivers fuel to the engine
a pedal that controls the throttle valve

throttle (verb)	fuel system (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