racer vs finisher

racer and finisher both are nouns.

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

As nouns, finisher is a hyponym of racer; that is, finisher is a word with a more specific, narrower meaning than racer:

Other hyponyms of racer include greyhound, steeplechaser.

As nouns, finisher is a hyponym of racer; that is, finisher is a word with a more specific, narrower meaning than racer:

Other hyponyms of racer include stock car.

As nouns, finisher is a hyponym of racer; that is, finisher is a word with a more specific, narrower meaning than racer:

racer (noun)	finisher (noun)
an animal that races	an animal that wins in a contest of speed
slender fast-moving North American snakes	a race car that finishes a race
a fast car that competes in races	a worker who performs the last step in a manufacturing process
someone who drives racing cars at high speeds	a painter who applies a finishing coat
	(baseball) a relief pitcher who can protect a lead in the last inning or two of the game
	a racing driver who finishes a race