Kọmpat efere na-ama jijiji bụ nke dabara adaba maka ihe mkpọkọ nwere obere nrapado na esemokwu dị n'etiti ahụ, dị ka ájá osimiri, nkume a gbajiri agbaji, na asphalt.Ihe ndị bụ isi na-arụ ọrụ nke igwe kọmpat na-ama jijiji gụnyere: mpaghara ala nke efere na-arụ ọrụ, oke n'ozuzu ya, ike mkpali, na oge mkpali.N'ozuzu, mpaghara efere ala nke otu nkọwapụta nke efere dị larịị yiri nke ahụ, ya mere arụmọrụ nke ndị na-emepụta ihe na-emetụta efere efere na-emetụtakarị àgwà zuru oke, ike mkpali, na oge excitation nke igwe.A na-eji ike mkpali eme ihe iji nọgide na-amanye mmanye nke ihe ejikọtara ọnụ;Ugboro ugboro na-akpali akpali na-emetụta arụmọrụ arụmọrụ na ogo, ya bụ, n'okpuru otu ike mkpali ahụ, nke na-eme ka ọ dịkwuo elu, na-eme ka arụmọrụ na-arụ ọrụ na-arụ ọrụ dị elu.
