solitaire vs card game

solitaire and card game both are nouns.

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

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

Other hypernyms of solitaire include cards.

solitaire (noun)	card game (noun)
a card game played by one person	a game played with playing cards
a dull grey North American thrush noted for its beautiful song
extinct flightless bird related to the dodo
a gem (usually a diamond) in a setting by itself