Chakavian
Chakavian in its actual use is the least spoken Serbo-Croatian dialect, being spoken only by 12% Croats. It is now mostly reduced in southwestern Croatia along the eastern Adriatic: Adriatic islands, and sporadically in the mainland coast, with rare inland enclaves up to central Croatia, and minor enclaves in Austria and Montenegro. All areas of old contacts with Romance languages.
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.