Okay, so imagine you have a group of people who all live in a really cool country called Albania. Now, each of those people also has their own special name that they go by. Some of those names might be "Liri," "Artan," or "Ermal." These names are like their own special label, just like the label on a jar of jam that says "strawberry" or "blueberry."
Now, some people might wonder why all the people who live in Albania are all called "Albanians." That's because it's like a big label that everyone in that country shares. It's like all the jars of jam in a grocery store being called "jam." So just like people can come from different places and have different names, but still be called "humans," everyone in Albania can have different names but still be called "Albanians" because they all come from the same country and culture.