환전換錢 foreign exchange; money exchange 교환交換 exchange 환기換氣 ventilation 환승換乘 transfer; change 환승역換乘驛 transfer station; interchange station 환율換率 exchange rate 환전소換錢所 currency exchange counter 교환권交換券 exchange ticket 치환置換 substitution; replacement 호환互換 compatibility; interchangeability 호환성互換性 compatibility; interchangeability 환금換金 conversion 환기통換氣筒 ventilator; ventilator pipe; ventilation stack 환산換算 conversion; change 환산표換算表 conversion table 환장換腸 going crazy; going mad; being out of one's mind 환절기換節期 change of seasons 환풍기換風機 ventilator; exhaust fan 변환變換 conversion 외환外換 foreign exchange 전환轉換 transition; change 전환기轉換期 transition period; turning point 전환점轉換點 turning point