What term refers to the price of one currency in terms of another?

The term that describes the price of one currency in terms of another is the exchange rate. The exchange rate indicates how much of one currency can be obtained with another currency, serving as a critical indicator in international trade and finance. For example, if the exchange rate between the US dollar and the euro is 1.2, it means that one can exchange one US dollar for 1.2 euros. This rate is influenced by various factors, including inflation rates, interest rates, and economic stability, and determines how currencies are valued relative to each other.

The other terms listed do not accurately define this concept. "Currency exchange" refers to the actual process of converting one currency into another, rather than the specific rate at which this occurs. "Foreign rate" and "value rate" are not standard economic terms recognized to describe currency pricing in relation to one another. Therefore, the exchange rate is the precise term used for the price of one currency expressed in terms of another currency.