fives vs court game

fives and court game both are nouns.

Word	Noun	Adjective	Verb	Adverb
fives	Yes	No	No	No
court game	Yes	No	No	No

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

fives: a game resembling handball; played on a court with a front wall and two side walls
court game: an athletic game played on a court

fives (noun)	court game (noun)
a game resembling handball; played on a court with a front wall and two side walls	an athletic game played on a court