Mwepu nke kọstọm bụ usoro nke onye mbubata ma ọ bụ onye mbupụ nwere ọrụ ikwupụta nkọwa ibu na kọstọm ma tinye nkwalite maka ibu, akpa, ngwa ngwa, onye na-ebubata ihe, ọrụ, onye nwe ibu ma ọ bụ ụlọ ọrụ. Mwepu nke kọstọm bụ usoro kacha mkpa maka mbubata na mbupụ.