auto vs fin

auto and fin both are nouns.

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

auto (noun)	fin (noun)
a motor vehicle with four wheels; usually propelled by an internal combustion engine	organ of locomotion and balance in fishes and some other aquatic animals
	a stabilizer on a ship that resembles the fin of a fish
	one of a set of parallel slats in a door or window to admit air and reject rain
	a shoe for swimming; the paddle-like front is an aid in swimming (especially underwater)
	one of a pair of decorations projecting above the rear fenders of an automobile
	the cardinal number that is the sum of four and one

auto (verb)	fin (verb)
	show the fins above the water while swimming
	propel oneself through the water in a finning motion
	equip (a car) with fins