Greeting Card Association

A greeting card (American English) or greetings card (British English) is a piece of card stock, usually with an illustration or photo on its front cover, made of high-quality paper featuring an expression of friendship, love, celebration, or other sentiment. Greeting cards are traditionally given on special occasions such as birthdays, weddings, anniversaries, baby showers, baptisms, and graduations, or during the holidays, including New Year's Day, Valentine's Day, Easter, Halloween, Thanksgiving, and Christmas. via Wikipedia ↗