World Englishes is the study of how people use English language in different parts of the world. So, imagine you have a toy car that you like to play with. Now, you have another toy car that looks a little different, but it's still a car, just like your first car. In the same way, people all over the world use English to communicate, but the way they use it may be a little different from how you are used to speaking English. These differences can be in the way they pronounce words, use grammar, or even in the vocabulary they use.
For example, if you talk to someone from the United Kingdom, they may use words like "lift" instead of "elevator" and say "lorry" instead of "truck." Similarly, if you talk to someone from Australia, they may use "mate" to refer to their friend, while someone from India may add a different accent or inflection to certain words.
World Englishes are important because they help us understand the different cultures and languages in the world, and how they influence the way people speak English. By studying world Englishes, we can appreciate and better communicate with people from different parts of the world, even if they speak English differently from how we do.