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The South Slavic languages are a branch of the Slavic language family, spoken by approximately 50 million people. This branch is further divided into two subgroups: Bosnian-Croatian-Montenegrin-Serbian and Bulgarian-Macedonian.1

The Bosnian-Croatian-Montenegrin-Serbian subgroup includes languages like Serbian and Croatian, which were standardized in the 19th century based on Shtokavian dialects. These dialects use the word "što" for "what." Another dialect group, Chakavian, uses "čа", and Kajkavian uses "kaj". The Slovene language, spoken by over 2.2 million people, shares some features with Croatian Kajkavian dialects and shows old links to West Slavic languages like Czech and Slovak.1

While these languages share common roots and some similarities, significant differences in phonetics, grammar, and vocabulary can lead to misunderstandings, even between closely related languages. For instance, the word for "red" in Russian (krasnyj) means "beautiful" in other Slavic languages.123

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