Czech, Polish, Slovak - Are These West Slavic Languages Pretty Much the Same?

Mutual Intelligibility and Differences

In some ways, all the Slavic languages share quite a lot in common. Despite the different writing systems used, there are a lot of similarities in the grammar used in, for example, Russian, Polish, and Ukrainian. This is not necessarily true when it comes to vocabulary but you will find a lot in common in the grammatical rules used within these languages.