Bosnian (bos)

The Bosnian language is the standardized variety of Serbo-Croatian mainly used by Bosniaks. Bosnian is one of three such varieties considered official languages of Bosnia and Herzegovina, along with Croatian and Serbian. It is also an officially recognized minority or regional language in Serbia, Montenegro, and Kosovo. The differences between the Bosnian, Serbian, and Croatian literary standards are minimal. Although Bosnian employs more Turkish, Persian, and Arabic loanwords—commonly called orientalisms—it is very similar to both Serbian and Croatian in its written and spoken form. Bosnian is spoken by approximately 3 million people.

Bosnian uses both the Latin and Cyrillic alphabets, with Latin in everyday use. It is notable among the varieties of Bosnian-Croatian-Serbian for a number of Arabic, Ottoman Turkish and Persian loanwords, largely due to the language's interaction with those cultures through Islamic ties.

Until the 1990s, the language was called Serbo-Croatian and that term is still used in English, along with "Bosnian-Croatian-Montenegrin-Serbian" (BCMS), especially in diplomatic circles.

Sources:
Wikipedia
https://www.omniglot.com/writing/Bosnian.htm