five hundred vs card game

five hundred and card game both are nouns.

Word	Noun	Adjective	Verb	Adverb
five hundred	Yes	Yes	No	No
card game	Yes	No	No	No

As nouns, card game is a hypernym of five hundred; that is, card game is a word with a broader meaning than five hundred:

five hundred: a card game similar to ecarte; each player is dealt 5 cards and the player making trump must take 3 tricks to win a hand
card game: a game played with playing cards

Other hypernyms of five hundred include cards.

five hundred (noun)	card game (noun)
a card game similar to ecarte; each player is dealt 5 cards and the player making trump must take 3 tricks to win a hand	a game played with playing cards
the cardinal number that is the product of one hundred and five

five hundred (adjective)	card game (adjective)
denoting a quantity consisting of 500 items or units