What Is a Credit Card?
From Wikipedia definition, a credit card is a system of payment named after the small plastic card issued to users of the system. In the case of credit cards, the issuer lends money to the consumer (or the user) to be paid later to the merchant.
A credt card is also any card that may be used repeatedly to borrow money or buy products and services on credit. Issued by banks, savings and loans, retail stores, and other businesses.
Generally, credit card is a card issued by banks or shops, allowing the holder to buy on credit.