Sotho-Tswana languages are a group of languages spoken by people in southern Africa, mostly in countries like South Africa, Lesotho, Botswana, and Swaziland.
Okay kiddo, so imagine you're in a big playground with lots of different groups of kids. Each group speaks their own language that they understand with their friends. That's kind of like how the different Sotho-Tswana languages work. Each language is spoken by a certain group of people and they understand it with their friends and family.
But just like some kids may share toys or games with other groups, some parts of the different Sotho-Tswana languages may be similar or even the same. For example, some words may sound the same or have the same meaning in different Sotho-Tswana languages.
So, just like there are different groups of kids who have their own language to communicate with, there are different Sotho-Tswana languages spoken by different groups of people in southern Africa. But they may still be able to understand some parts of each other's languages.