drainage / displacement (water displaced by an object in water) / Alternative spelling of 廃水. wastewater.

drain

room (section of a building contained by walls)

water (sometimes cold and/or fresh) / drinking water / a fluid, liquid / a flood / (sumo) Short for 水入り (mizuiri): halting

sharing a room with someone as a roommate or flatmate

(vehicles) bus / (computing) bus

bath

bass (fish)

(music) bass (the lower spectrum of sound of a singing voice or musical instrument) / (music) Clipping of コントラバス: a contrabass, a double bass, a bass

bus stop