Chakavian
Chakavian or Čakavian , , ( , proper name: "čakavica" or "čakavština" , own name: "čokovski, čakavski, čekavski") is a dialect of the Serbo-Croatian language spoken by a minority of Croats. It has a low mutual intelligibility with Shtokavian. There is much internal diversity, to the point where intelligibility between the northern and southern varieties of Chakavian is low. All three main Serbo-Croatian dialects are named after their most common word for "what?", which in Čakavian is "ča" or "ca". Chakavian is spoken mainly in the northeastern Adriatic: in Istria, Kvarner Gulf, in most Adriatic islands, and in the interior valley of Gacka, more sporadically in the Dalmatian littoral and central Croatia.
South Slavic languages
This dialect is spoken primarily in the federal state of Burgenland in Austria and nearby areas in Vienna, Slovakia, and Hungary by descendants of Croats who migrated there during the 16th century. This dialect (or family of dialects) differs from standard Croatian, since it has been heavily influenced by German and Hungarian. It has properties of all three major dialectal groups in Croatia, since the migrants did not all come from the same area. The linguistic standard is based on a Chakavian dialect, and (like all Chakavian dialects) is characterized by very conservative grammatical structures: for example, it preserves case endings lost in the Shtokavian base of standard Croatian. At most 100,000 people speak Burgenland Croatian and almost all are bilingual in German. Its future is uncertain, but there is movement to preserve it. It has official status in six districts of Burgenland, and is used in some schools in Burgenland and neighboring western parts of Hungary.