Zera (Birth Age) zvinoreva kuverengwa kwemakore kubva pakazvarwa munhu kusvika panguva iyo iri kutaurwa yaachiri kurarama. NaDhariusi muMedhe wakatora umambo, aane makore anoda kuita makumi matanhatu nemairi ousharuka: Darius the Mede took over the kingdom, at the age of sixty-two (Daniel 5:, Bhaibheri reChiNdau). Izwi rokuti buthaka (same age) rinotaurwa kuKalanga ruchireva zera rimwe. Izwi rokuti musela (same age; age grade) rinotaurwa mururimi rweBaila ruchireva zera rimwe. Vatauri veLuganda vanoti bulamu (age) kureva zera.