"Karnten" is the German expression for the Federal State of Carinthia.

The name Karnten comes probably from the Celtic language. 
"Carant" was the first name which Celtic  tribes called this region long time ago. Carant means something like "friends" or "land of friends".

The seond version tells that the name of Karnten comes from the word "karanto", which means something like stones and rocks.

The Slovenian expression for Karnten is "Koroska".