北西コーカサス語族
Linguists divide the Northwest Caucasian languages into three branches, namely Circassian (Adyghe and Kabardian), Ubykh (consisting only of the Ubykh language, which is considered to have diverged from the Circassian languages and is now a dead language), and Abazgi (Abkhaz and Abaza). The Ubykhs lived on the Black Sea coast, around the city of Sochi, the capital of Circassia, north of Abkhazia.