Gulu la mapiko otolera zovala

Nsomba zonyamula zovala zimatha kusiyanitsidwa motsatira njira zosiyanasiyana, motere:
Malinga ndi zinthu: Ndodo yonyamula zovala imatha kugawidwa molingana ndi zida zosiyanasiyana, monga ndodo yabwino, nsungwi, chitsulo chosapanga dzimbiri, etc.
Malinga ndi cholinga: Ndodo yotolera zovala imatha kugawidwa malinga ndi zolinga zosiyanasiyana, monga kuyeretsa zovala, kuyeretsa zogona, kuyeretsa mipando, ndi zina.
Malinga ndi kapangidwe kake: Ndodo yotolera zovala imatha kugawidwa molingana ndi kapangidwe kake, monga ndodo imodzi yotola zovala, ndodo yotolera zovala, ndi burashi pandodo.
Malinga ndi kutalika: Ndodo zotola zovala zimatha kugawidwa molingana ndi kutalika, monga ndodo zazifupi zotola, zovala zapakatikati, ndodo zotola zovala zapamwamba, ndi zina zambiri.
Chifukwa chake, pali njira zambiri zamagawidwe zotolera ndodo, ndipo kusankha kwachindunji kumadalira cholinga ndi zosowa zogwiritsira ntchito ndodo zotolera zovala.