Te upoko porotitie tohu ana ki te upoko i hangaia he haurua anga porotītaha me te tapa tika (kouma porotakaro).
Upoko rihie tohu ana ki te upoko i hangaia he anga porowhita, he tapa porowhita me te tapa pai (he maimoatanga poto porotaka). ,
Te upoko hemisphericale tohu ana ki te upoko i hangaia he haurua anga porowhita me te tapa totika (wahanga poto porotakaro).
Ko te poka ahi he ipu he waro, he ahi rakau ranei, ka whakamahia hei whakamahana, whakamaroke kakahu me te BBQ, me etahi atu, ka taea hoki te whakairo ki runga i tona tinana nga tauira ataahua, hei whakapaipai i te kari, etc.