Tasmedga mačči ala ɣef yidgan i yettwazedɣen i d-tettawi, maca ad tt-naf tebḍa d taggayin :taggayt i yettnadin ɣef yismawen n yimeḍqan i yesɛan aman(Hydronymie), isaffen,iɣezran , tella diɣen taggayt n yismawen n yidurar (l’oronymie), akked yismawen n yiberdan (l’odonymie).