波 - waves, billows, Poland

stormy and full of drama; full of ups and downs; with many vicissitudes

ripple; ring on the water

waves that remain after the wind has subsided

Naniwa (former name for Osaka region)

wave; billow; ripple; breaker; swell

waves; billows; surge

wavelength

radio wave; reception; signal

spread; extension; influence; aftereffect; ripple

ultrasonic waves; ultrasound

cold wave

disturbance; trouble; commotion; uproar; turmoil