player vs movie actor

player and movie actor both are nouns.

Word	Noun	Adjective	Verb	Adverb
player	Yes	No	No	No
movie actor	Yes	No	No	No

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

player (noun)	movie actor (noun)
a theatrical performer	an actor who plays a role in a film
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