Card

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The term card (from Greek χάρτης - chartēs, "paper, papyrus"), 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
• Memory card, a data storage device used with digital cameras, computers, telephones, music players, video game consoles, and other electronics
• Penalty cards for rule violations in several sports, e.g. red card or yellow card
• Playing card, a card, typically made of laminated paper, used for playing games
• Policy debate card, a piece of evidence in policy debate
• Postcard, a card used for sending messages in the mail without use of an envelope
• 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

Non-physical analogues of physical cards:

• E-card, an electronic version of a greeting card or postcard
• Test card, also known as a test pattern, a television test signal, typically broadcast at times when the transmitter is active, but no programmes are being broadcast

Sports

Teams

• Arizona Cardinals, a National Football League team
• Louisville Cardinals, the athletic teams of the University of Louisville
• St. Louis Cardinals, a Major League Baseball team

Other

• Card (professional wrestling), the lineup of the matches that will be staged at a given venue for a given performance

People

• Orson Scott Card, science fiction author.

Acronyms

• The CARDS programme (Community Assistance for Reconstruction Development and Stabilisation), the European Union's main financial assistance instrument to the Western Balkans.
• Caspase recruitment domains, or CARD domains, are interaction motifs found in a wide array of proteins.
• Wolfson Centre for Age-Related Diseases

Other

• card may be used in mathematical notation as a function that returns the cardinality of a set. See also cardinal number.
• Cardboard
• Card reader
• The Card, Arnold Bennett's 1911 novel and the 1952 film derived from it

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