Комментарии:The Kor. form reflects an earlier *čămh- < *čam(o)-g-, with a velar suffix (cf. the Mong. form). The root is sufficiently attested in Mong. and Kor.; but the Turkic forms may have a borrowed origin, the TM and Jpn. forms are attested worse, so the archaic nature of the root is somewhat dubious.