bank card vs charge card

bank card and charge card both are nouns.

Word	Noun	Adjective	Verb	Adverb
bank card	Yes	No	No	No
charge card	Yes	No	No	No

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

bank card: a payment card issued by a bank
charge card: a card (usually plastic) that assures a seller that the person using it has sufficient means of payment and that the issuer will see to it that the seller receives payment for the merchandise delivered

Other hypernyms of bank card include charge plate, plastic.

bank card (noun)	charge card (noun)
a payment card issued by a bank	a card (usually plastic) that assures a seller that the person using it has sufficient means of payment and that the issuer will see to it that the seller receives payment for the merchandise delivered