player vs scorer

player and scorer both are nouns.

Word	Noun	Adjective	Verb	Adverb
player	Yes	No	No	No
scorer	Yes	No	No	No

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

player (noun)	scorer (noun)
a theatrical performer	a player who makes a score in a game or contest
a person who participates in or is skilled at some game	a logger who marks trees to be felled
someone who plays a music as a profession	an official who records the score during the progress of a game
a person who pursues a number of different social and sexual partners simultaneously
someone who takes part in an activity