Christmas cards are greeting cards specifically designed to celebrate the Christmas holiday. They often feature festive images, such as Christmas trees, snowflakes, or Santa Claus, and include warm wishes for the season. People send these cards to family, friends, and colleagues to express their love and good cheer during the holiday season. The tradition of sending Christmas cards began in the 19th century in England. Today, they can be purchased from stores or made at home, allowing for personal touches. Many people enjoy writing heartfelt messages inside the cards, making them a cherished part of holiday celebrations and a way to stay connected with loved ones.