Okay, kiddo! Do you know what a name is? It's a special word that people use to identify themselves, just like how you have a name. Now, a family name is a word that shows which family you belong to. It's also called a surname, last name, or family name.
Let's say your dad's name is John and your mom's name is Sarah. When they got married, they decided that they and their future children would have the family name "Smith". So, your full name would be [Your First Name] Smith.
See how it works? A family name is like a special code that tells everyone which family you're a part of. Your grandparents, cousins, aunts, and uncles will also share this family name with you.
Family names can be passed down from generation to generation, so your great-great-grandfather might have had the same last name as you do now!
It's important to remember that not everyone has the same family name. In some cultures, people might have a different kind of naming system altogether. But, in most places around the world, having a family name is a common way of identifying yourself as part of a family.