There are basically two ways the exchange rate of a country's currency with other currencies is determined (a) A fixed rate - a reduction in this is called a Devaluation and an increase a Revaluation. (b) A 'floating' rate, determined by market forces. A fall under this system is termed a depreciation and a rise an appreciation.
The rate of exchange between two currencies.
The rate, or price, at which one country's currency is exchanged for the currency of another country.
The price of foreign currencies. If it costs $.42 to buy one Swiss Franc, the exchange rate is .4200. As one currency is inflated faster or slower than the other, the exchange rate will change, reflecting the change in relative value. The currency being inflated faster is said to be becoming weaker because more of it must be exchanged for the same amount of the other currency. As a currency becomes weaker, exports are encouraged because others can buy more with their relatively stronger currencies.
The price of one country's currency relative to another (e.g. $1 Cdn = $.67 US.) Exchange rates can be managed according to three basic systems - floating, fixed or pegged.
The price of one currency expressed in terms of another currency (or vice versa). The convention for the Australian dollar is that it is quoted in terms of the amount of foreign currency per Australian dollar. Sometimes referred to as the 'Indirect' method of quoting.