a wave

a sea, an ocean / a lake / (figuratively) an object covering over a large area, as in 血の海 (chi no umi, “pool of blood”) or 火の海 (hi no umi, “sea of fire”)

and a half

dark; dim / sombre; gloomy

absolute darkness / (Buddhism) a complete lack of virtue or wisdom / (color) pure black

(archaic) second-person personal pronoun: you

hide oneself / be latent

業務: business, duties, work

ammonium

交魚: / 香魚: sweetfish / 薨御: