abaza language abkhaz language abkhazia adygea adyghe language altaic languages anatolia basque language burushaski language caucasus circassian language dialect fortis and lenis georgian language hakuchi adyghe hattians hattic language hattusa hittite language hittites homophony indo-european languages iraq jordan kabardian language kabardino-balkaria karachay-cherkessia kevin tuite khoisan languages labialisation languages of the caucasus linguistic reconstruction middle east na-dene languages north caucasian languages northeast caucasian languages nostratic languages noun noun class palatalization participle phoneme proto-circassian russia sadz secondary articulation sino-tibetan languages sound change syria turkey ubykh language united states uralic languages yeniseian languages