捷克語, or Czech, is a West Slavic language primarily spoken in the Czech Republic. It is the official language of the country and is used by approximately 10 million people. Czech is known for its rich literary tradition and has a complex grammar system, including seven cases for nouns. The language uses the Latin alphabet, with some additional diacritics that modify the pronunciation of certain letters. Czech is closely related to Slovak, and speakers of both languages can often understand each other. Learning Czech can be challenging, but it offers insights into the culture and history of the Czech Republic.