noun
Refers to the system or market for exchanging one currency for another, or the instruments used in such transactions.
外国為替市場は24時間動いている。
The foreign exchange market operates 24 hours a day.
外国為替のリスクについて学ぶ。
Learn about foreign exchange risk.
為替 alone means 'money order' or 'exchange' in a broader sense; 外国為替 specifically refers to foreign exchange.
Compound of 外国 (foreign country) and 為替 (exchange, money order).