exchange の多義 (Pro 整理) ――
①物の交換 (exchange clothes/gifts),
②外貨両替 (currency exchange, foreign exchange),
③意見交換 (exchange ideas, exchange opinions),
④留学 (exchange student, exchange program),
⑤株式取引所 (stock exchange, NYSE=New York Stock Exchange)。
"exchange A for B"
必ず前置詞 for を使う (✗ exchange A with B, ✗ exchange A to B → ○ exchange A for B)。foreign exchange (外貨両替) 関連 ――
exchange rate (為替レート, JPY/USD),
FX=Foreign Exchange (外国為替市場, 世界最大の金融市場),
forex trader (FX トレーダー),
currency conversion (通貨換算),
money changer (両替所, 観光地で頻出)。
世界の主要 stock exchanges
NYSE (NY証券取引所), NASDAQ (ナスダック、ハイテク株中心), LSE (ロンドン), Tokyo Stock Exchange (東証), Shanghai Stock Exchange (上海), Hong Kong, Frankfurt (DAX)。慣用句 ―― in exchange for ~ = 〜と引き換えに ("He helped me in exchange for lunch."), a fair exchange = 公平な交換, exchange blows = 殴り合う。