A creole language is a special kind of language that happens when two different languages come together, like a mix of two different favorite foods. When people from different language backgrounds meet and start communicating, they might have a hard time understanding each other, so they try to make a new language that blends both of their languages together.
It's kind of like if your mom and your friend's mom made you a cake together, but each of them had their own special recipe. They might combine the ingredients and make a new cake that has parts of both of their recipes. In the same way, a creole language takes words and grammar rules from two different languages and mixes them together to create something new.
Sometimes, creole languages develop over many generations, as people in a community continue to use the language and add new words or rules. Other times, they might be created more quickly, like if two groups of people are forced to learn a new language together, and they start combining their old languages to communicate better.
Creole languages can be found all over the world, and often have unique features that make them different from the languages that inspired them. For example, they might have simplified grammar, many words borrowed from one language or the other, or different pronunciations. But even though they're different from their "parent" languages, creole languages are just as real and important as any other language.