auto vs rental

auto and rental both are nouns.

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

auto (noun)	rental (noun)
a motor vehicle with four wheels; usually propelled by an internal combustion engine	the act of paying for the use of something (as an apartment or house or car)
	property that is leased or rented out or let

auto (adjective)	rental (adjective)
	of or relating to rent
	available to rent or lease