Greeting cards are conventionally in the form of a card in various sizes, made of heavy paper or cardboard and have a corresponding picture card theme. Cards are usually folded in half with the inside of congratulations or a message addressed to the recipient.
Greeting cards are usually sent or given on special occasions, such as birthdays, Eid, weddings, Christmas and Valentine's Day. Greeting cards are also frequently used to write humorous messages, friendship, love, sympathy, or just to say thank you. Bouquets, hampers, or gifts are also often accompanied by a piece of greeting cards.
thank you
May be useful