clock golf vs golf game

clock golf and golf game both are nouns.

Word	Noun	Adjective	Verb	Adverb
clock golf	Yes	No	No	No
golf game	Yes	No	No	No

As nouns, golf game is a hypernym of clock golf; that is, golf game is a word with a broader meaning than clock golf:

clock golf: a form of golf in which you putt from positions arranged on the circumference of a circle around the hole
golf game: a game played on a large open course with 9 or 18 holes; the object is use as few strokes as possible in playing all the holes

Other hypernyms of clock golf include golf.

clock golf (noun)	golf game (noun)
a form of golf in which you putt from positions arranged on the circumference of a circle around the hole	a game played on a large open course with 9 or 18 holes; the object is use as few strokes as possible in playing all the holes