Foreign exchange transactions refer to the buying and selling of currencies in the global market, while currency deposits and loans involve the lending and borrowing of currencies. As these transactions near their maturity date, an extension may be granted to allow for more time to complete the transaction. This is a common practice in the finance world, and is often used to manage risks and ensure smooth financial operations. Therefore, it is important to have a thorough understanding of these terms in order to make informed decisions in the ever-changing world of finance.