Exchanger (exchange office)
A service that performs the actual exchange of one currency for another at its own rate and from its own reserve. Unlike an exchange, it works at a fixed rate without an order book.
In more detail
An exchanger works at a fixed rate and from its own reserve: you see the price in advance, without trading or an order book like on an exchange. That is why it is simpler for a beginner, but each office has its own rate, limits, fees and reputation. Choosing blindly is unprofitable and risky — compare several exchangers through a monitor.