北西コーカサス語族
The Northeast Caucasian languages, also called East Caucasian or Nakh-Daghestanian languages, is a family of languages spoken in the Russian republics of Dagestan, Chechnya and Ingushetia and in Northern Azerbaijan as well as in diaspora populations in Western Europe and the Middle East. They are occasionally called Caspian, as opposed to "Pontic" for the Northwest Caucasian languages.