shuffleboard vs outdoor game

shuffleboard and outdoor game both are nouns.

Word	Noun	Adjective	Verb	Adverb
shuffleboard	Yes	No	No	No
outdoor game	Yes	No	No	No

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

shuffleboard: a game in which players use long sticks to shove wooden disks onto the scoring area marked on a smooth surface
outdoor game: an athletic game that is played outdoors

shuffleboard (noun)	outdoor game (noun)
a game in which players use long sticks to shove wooden disks onto the scoring area marked on a smooth surface	an athletic game that is played outdoors