cassino vs card game

cassino and card game both are nouns.

Word	Noun	Adjective	Verb	Adverb
cassino	Yes	No	No	No
card game	Yes	No	No	No

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

cassino: a card game in which cards face up on the table are taken with eligible cards in the hand
card game: a game played with playing cards

Other hypernyms of cassino include cards.

cassino (noun)	card game (noun)
a card game in which cards face up on the table are taken with eligible cards in the hand	a game played with playing cards