一曹[issou] master sergeant (JSDF)
１等軍曹[ittougunsou] sergeant first-class
軍曹[gunsou] sergeant
御曹子[onzoushi] son of a distinguished family
三曹[sansou] sergeant (JSDF)

３等軍曹[santougunsou] sergeant
児曹[jisou] children
重曹[juusou] baking soda
重炭酸曹達[juutansansouda] sodium bicarbonate
上級曹長[joukyuusouchou] sergeant major

海鷂魚[ei] ray (fish)
井の中の蛙大海を知らず[inonakanokawazutaikaiwoshirazu] parochial
一天四海[ittenshikai] the world
雲海[unkai] sea of clouds
沿海[enkai] coast

遠海[enkai] deep sea
黄海[koukai] Yellow Sea
温海[atsumi] warm sea
海の幸[uminosachi] seafood