Money exchange; exchanging one currency for another (often for travel or transactions).
空港で両替をしてから市内に向かった。
I exchanged money at the airport before heading into the city.
両替所は銀行より手数料が高いことがある。
Exchange booths can sometimes charge higher fees than banks.
旅行中は少額ずつ両替して使うと便利だ。
It's convenient to exchange small amounts of money as needed while traveling.