auto vs fender

auto and fender both are nouns.

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

auto (noun)	fender (noun)
a motor vehicle with four wheels; usually propelled by an internal combustion engine	a cushion-like device that reduces shock due to an impact
	a barrier that surrounds the wheels of a vehicle to block splashing water or mud
	a low metal guard to confine falling coals to a hearth
	an inclined metal frame at the front of a locomotive to clear the track