ELI5: Explain Like I'm 5

Greeting card

A greeting card is a special kind of paper that you can give to someone to say hello or wish them something nice, like a happy birthday, Merry Christmas or happy anniversary. They usually have pretty pictures on the front and words on the inside that express how much you care about the person you're giving it to. When you give someone a greeting card, they will feel happy and loved because you thought of them and gave them something special. It's a nice way to show someone that you're thinking of them and want to make them happy!