Комментарии: PAT *c̣ʷa (in Abkh. - a compound with *gʷǝ 'heart'). Ad. < PAK *c̣ʷǝ. Ub. also has a compound with ǵǝ 'heart' (cf. Abkh.) + bIa 'grey'. Note the loss of glottalization in Ub. (a misspelling of Vogt?); the normal glottalized form of the root appears in c̣ʷa-cá 'gall' (-ca is probably 'burning, bitter').
