Indorerwamo imwe, nanone yitwa indorerwamo ebyiri (cyangwa ikirahuri cyinzira ebyiri, indorerwamo ya feza igice, hamwe nindorerwamo itagaragara), ni indorerwamo isubiranamo igaragarira igice kandi igaragara neza.Imyumvire yo kwanduza inzira imwe igerwaho mugihe uruhande rumwe rwindorerwamo rwaka cyane urundi ruhande rwijimye.Ibi bituma ureba kuruhande rwijimye ariko ntabwo aribyo.