Kashubian language is a way of talking that some people in a place called Kashubia use. Kashubia is a part of Poland that is near the sea. The language is unique and different from the language spoken in the rest of Poland.
Just like how you may speak English, which is different from how people speak Spanish, people in Kashubia speak Kashubian. Some people in Kashubia feel very proud of their language and culture.
The Kashubian language has its own special words, sounds, and grammar rules. It is similar to other languages spoken in some parts of Europe like German and Czech.
In Kashubia, there are schools where children can learn to speak Kashubian so they can keep their language and culture alive. There are also books, songs, and poems written in Kashubian.
Although not many people know about Kashubian language, it is important to the people who speak it because it helps them keep their history and traditions alive.