Greeting cards are decorative pieces of cardstock or paper that convey messages for various occasions, such as birthdays, holidays, or anniversaries. They often feature colorful designs, illustrations, and sometimes photographs, making them visually appealing. People typically write personal messages inside the cards to express their feelings or wishes to the recipient. These cards can be purchased from stores or made at home, allowing for a personal touch. Common themes include Christmas, Valentine's Day, and graduation. Many people enjoy sending and receiving greeting cards as a way to connect with loved ones and celebrate special moments in life.