golfer vs golf player

golfer and golf player both are nouns.

Word	Noun	Adjective	Verb	Adverb
golfer	Yes	No	No	No
golf player	Yes	No	No	No

As nouns, golfer and golf player are synonyms defined as:

Other synonyms of golfer include linksman.

golfer (noun)	golf player (noun)
someone who plays the game of golf	someone who plays the game of golf