exhaust vs silencer

exhaust and silencer both are nouns.

Word	Noun	Adjective	Verb	Adverb
exhaust	Yes	No	Yes	No
silencer	Yes	No	No	No

exhaust (noun)	silencer (noun)
system consisting of the parts of an engine through which burned gases or steam are discharged	a tubular acoustic device inserted in the exhaust system that is designed to reduce noise
gases ejected from an engine as waste products	short tube attached to the muzzle of a gun that deadens the sound of firing

exhaust (verb)	silencer (verb)
wear out completely
eliminate (a substance)
use up the whole supply of
use up (resources or materials)
deplete