quoits vs outdoor game

quoits and outdoor game both are nouns.

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

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

quoits: a game in which iron rings (or open iron rings) are thrown at a stake in the ground in the hope of encircling it
outdoor game: an athletic game that is played outdoors

quoits (noun)	outdoor game (noun)
a game in which iron rings (or open iron rings) are thrown at a stake in the ground in the hope of encircling it	an athletic game that is played outdoors