auto vs grille

auto and grille both are nouns.

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

auto (noun)	grille (noun)
a motor vehicle with four wheels; usually propelled by an internal combustion engine	a framework of metal bars used as a partition or a grate
	grating that admits cooling air to car's radiator
	small opening (like a window in a door) through which business can be transacted