charge card vs cashcard

charge card and cashcard both are nouns.

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

As nouns, cashcard is a hyponym of charge card; that is, cashcard is a word with a more specific, narrower meaning than charge card:

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
cashcard: a payment card that entitles the holder to receive cash

Other hyponyms of charge card include bank card, calling card, phone card, cash card, debit card, credit card.

charge card (noun)	cashcard (noun)
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	a payment card that entitles the holder to receive cash