Dialects of Serbo-Croatian
Kajkavian is spoken in North Croatia, including the capital Zagreb, as well as in a few enclaves in Austria, Hungary, and Romania. Though its speakers are ethnic Croats and Kajkavian is thus generally considered a dialect of Serbo-Croatian, it is closer to neighboring Slovene than it is to Chakavian or Shtokavian. The Kajkavian area of Croatia is bordered on the northwest by Slovene language territory. It is bordered on the east and southeast by Shtokavian dialects roughly along a line that was the former division between Civil Croatia and the Habsburg Military Frontier; in southwest along Kupa and Dobra rivers, it persisted in ancient (medieval) contact with Chakavian dialects.
Bosnian language
Some Croatian linguists (Zvonko Kovač, Ivo Pranjković, Josip Silić) support the name "Bosnian" language, whereas others (Radoslav Katičić, Dalibor Brozović, Tomislav Ladan) hold that the term "Bosnian language" is the only one appropriate and that accordingly the terms Bosnian language and Bosniak language refer to two different things. The Croatian state institutions, such as the Central Bureau of Statistics, use both terms: "Bosniak" language was used in the 2001 census, while the census in 2011 used the term "Bosnian" language.