cards vs Go Fish

cards and Go Fish both are nouns.

Word	Noun	Adjective	Verb	Adverb
cards	Yes	No	No	No
Go Fish	Yes	No	No	No

As nouns, Go Fish is a hyponym of cards; that is, Go Fish is a word with a more specific, narrower meaning than cards:

cards: a game played with playing cards
Go Fish: a card game for two players who try to assemble books of cards by asking the opponent for particular cards

cards (noun)	Go Fish (noun)
a game played with playing cards	a card game for two players who try to assemble books of cards by asking the opponent for particular cards