noun
money-exchange business; currency exchange dealer
Refers to a business or person that exchanges currency, historically common but now often replaced by banks or specialized services.
昔、両替商は街のあちこちにあった。
In the past, money-exchange businesses were found all over town.
両替 is the act of exchanging money, while 両替商 refers to the business or dealer that performs the exchange.
Compound of 両替 (money exchange) and 商 (trade, business). The exact historical derivation is uncertain, but the term has been used since the Edo period for licensed money changers.