甲
갑옷 갑, 첫째 천간 갑, 비롯할 갑, 떡잎 날 갑, 법령 갑, 대궐 갑, armor, shell; fingernails; 1st heavenly stem (5)
殼
껍질 각, casing, shell, husk, hull, skin (12)
甲殼
갑각
carapace
甲殼
갑각
crust