race vs racer

race and racer both are nouns.

Word	Noun	Adjective	Verb	Adverb
race	Yes	No	Yes	No
racer	Yes	No	No	No

race (noun)	racer (noun)
a canal for a current of water	an animal that races
a contest of speed	slender fast-moving North American snakes
any competition	a fast car that competes in races
people who are believed to belong to the same genetic stock	someone who drives racing cars at high speeds
(biology) a taxonomic group that is a division of a species; usually arises as a consequence of geographical isolation within a species
the flow of air that is driven backwards by an aircraft propeller

race (verb)	racer (verb)
compete in a race
move hurridly
cause to move fast or to rush or race
to work as fast as possible towards a goal, sometimes in competition with others