Exchange rate wiki:
[he exchange rate between two currencies specifies how much one currency is worth in terms of the other. For example an exchange rate of 120 Japanese yen (JPY, ¥) to the United States dollar (USD, $) means that JPY 120 is worth the same as USD 1. An exchange rate is also known as a foreign-exchange rate, forex rate or FX rate. The foreign exchange market is one of the largest markets in the world. By some estimates, about USD 2 trillion worth of currency changes hands every day.
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Foreign exchange market wiki:
n exchange market or currency market or Forex is the market where one currency is traded for another. It is one of the largest markets in the world.
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