Ipayipi lensimbi elingenamthungo libhobozwa yiyo yonke insimbi eyindilinga, futhi ipayipi lensimbi ngaphandle kokushisela ngaphezulu libizwa ngokuthi ipayipi lensimbi engenamthungo. Ngokwendlela yokukhiqiza, ipayipi lensimbi elingenamthungo lingahlukaniswa libe yipayipi lensimbi elingenamthungo eligoqwe elishisayo, ipayipi lensimbi elibandayo eligoqelwe elibandayo, ipayipi lensimbi elibandayo elidonswayo, ipayipi lensimbi elingenamthungo, ukugqekeza kwepayipi, njll.