When you have a name, sometimes there can be extra letters at the end of it. These extra letters are called a suffix. It's like a little addition to your name to help describe who you are or what you do.
For example, if someone's name is John, they might add the suffix "Jr." to the end of their name if their dad's name is also John. This means they are the smaller or younger version of their dad with the same name.
Another example is someone with the name Smith who becomes a doctor. They might add the suffix "Dr." to the end of their name to show that they are now a doctor and have a special job helping people's health.
So suffixes can tell you more information about a person and what makes them special or different from others with the same name.