Okay, so you know how people around the world speak different languages? Well, in Australia, there are lots of different languages too, but there are some languages that are kind of like a big family. We call them the "macro-Pama–Nyungan languages".
Now, imagine you have a big group of people who all have different favorite colors. Some people like red, some people like green, some people like blue, and so on. But even though they all like different colors, they might also have something in common, like maybe they all live in the same town or go to the same school.
In the same way, the macro-Pama–Nyungan languages are a big family of languages that have some things in common, even though they're different in other ways. They're all spoken by people who live in and around Australia, and they share some basic rules and structures for how words are put together.
So, just like your friends who like different colors can still be part of the same group because they share something in common, the macro-Pama–Nyungan languages are all part of the same big family of languages because they share some basic traits.