Khara-Khorum, might be one of the following words: khara-khu'
rem (black
stone), khara khorin (black wall), khara-kerem (black castle), khara-korum (black shivers of the ruins of Uigur's KaraKorum, VIII CE), khorin ger (twenty gers, according to
old Mongolian custom, was a center of the city), kho'l khorin (a place is not allowed to speak) and et cetera.