The Czech language 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 closely related to Slovak and Polish, sharing many linguistic features and vocabulary. Czech uses the Latin alphabet, with some additional diacritics that modify the pronunciation of certain letters. The language has a rich literary tradition, with notable authors like Franz Kafka and Karel Čapek. Czech grammar is known for its complexity, including a system of noun declensions and verb conjugations.