player vs mimer

player and mimer both are nouns.

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

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

player (noun)	mimer (noun)
a theatrical performer	an actor who communicates entirely by gesture and facial expression
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