player vs someone

player and someone both are nouns.

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

player (noun)	someone (noun)
a theatrical performer	a human being; person, singular, assertive existential pronoun; pronoun, person, singular; quantifier: assertive existential
a person who participates in or is skilled at some game
someone who plays a music as a profession
a person who pursues a number of different social and sexual partners simultaneously
someone who takes part in an activity