변경change; alteration 변동change; fluctuation 변화change 가변variability 가변성variability; changeability 가변적being variable 가변적changeable; changing; variable 개변change; reformation; renovation 격변sudden change; rapid change; violent upheaval; cataclysm 격변기period of upheaval

환전foreign exchange; money exchange 교환exchange 환기ventilation 환승transfer; change 환승역transfer station; interchange station 환율exchange rate 환전소currency exchange counter 교환권exchange ticket 치환substitution; replacement 호환compatibility; interchangeability