The term card primarily refers to
cardboard or a piece of this.More generally, the term can refer to any of various small flat objects, typically made from heavy paper or plastic. In particular:
Business card, a wallet sized card containing contact information for a person or business.
Cigarette card, a trading card used to reinforce cigarette packaging
Common Access Card (CAC), a Department of Defense (DoD) access & ID Card; contains a computer chip.
Credit card, a plastic card for purchasing items on credit
Debit card, a plastic card for purchasing items using money in a bank account
Expansion card or computer card, a computer hardware component or device, attached generally inside a computer, that provides added functionality, such as a graphics card or sound card
File card (tool), a metal brush used to clean the cutting grooves on files
Gift card, usually plastic payment tool that is mailed or given to a relative, friend, or associate as a method of purchasing within stores
Greeting card, usually folded paper that is mailed or given to a relative, friend, or associate to express a message of greeting, appreciation, or some other sentiment
Health card, a token to be used as patient data card (PDC) or health professional card (HPC)
ID card, an identity document
Index card, a card for creating and organizing notes in a stack, usually for a research project
Library card, a card used to borrow books or other media from a library
Penalty cards for rule violations in several sports, e.g.
red card or
yellow cardPlaying card, a card, typically made of laminated paper, used for playing gamesPolicy debate card, a piece of evidence in policy debate
Postcard, a card used for sending messages in the mail without use of an envelopePrePay card, usually plastic payment tool that is mailed or given to a relative, friend, or associate as a method of pre-payment for products within stores
Punch card, an obsolete method for storing data
Raising card, a spiked brush-like tool used to straighten out wool, hemp, etc.
SIM card, a smart card identifying a mobile phone service subscriber
Smart card, a plastic card containing a computer chip (also known as a Key Card)
Trading card, a card used for trading or collecting, or for use in a collectible card game
Value card, a self-help device listing behavior changes the bearer wants to make
Visiting card, aka calling card, a more personal version of a business card.
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