color

to change; to become different; to turn into; to become (something else)

tide

influence, effect

to influence, to have an effect upon

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”)

(sumo, martial arts) a quick shift of position / flexibility in adapting one's words and deeds to changing circumstances

(physics) tidal force

(sciences) tidology

Kyūjitai form of 潮汐学