rouge et noir vs cards

rouge et noir and cards both are nouns.

Word	Noun	Adjective	Verb	Adverb
rouge et noir	Yes	No	No	No
cards	Yes	No	No	No

As nouns, cards is a hypernym of rouge et noir; that is, cards is a word with a broader meaning than rouge et noir:

rouge et noir: a card game in which two rows of cards are dealt and players can bet on the color of the cards or on which row will have a count nearer some number
cards: a game played with playing cards

Other hypernyms of rouge et noir include card game.

rouge et noir (noun)	cards (noun)
a card game in which two rows of cards are dealt and players can bet on the color of the cards or on which row will have a count nearer some number	a game played with playing cards