Foreign exchange — the exchange of currencies and the related market or transactions, including exchange rates, remittances, and settlements.
外国為替のレートが急変し、輸出企業に影響が出た。
Foreign exchange rates changed sharply, affecting export companies.
銀行で外国為替の手続きと手数料を確認した。
I checked the foreign exchange procedures and fees at the bank.
外国為替市場は世界中で24時間動いている。
The foreign exchange market operates 24 hours around the world.