• 鶏卵けいらん — hen’s egg
• 魚卵ぎょらん — fish egg / roe
• 卵黄らんおう — egg yolk
• 卵白らんぱく — egg white
• 卵生らんせい — oviparity

卵 is traditionally explained as pictographic, linked to images of eggs (often fish eggs in early forms). It now broadly covers eggs in biology and food contexts.