파동이 · 파동을
wave, wave motion; fluctuation, shock
Example
소리는 공기를 통해 전달되는 파동입니다.
Sound is a wave carried through the air.
Word parts
파 wave+동 move
Literally 'wave movement'.
Good to know
It's also used for economic shocks: 석유 파동 means 'the oil crisis'.
Related words