"Dong" is a term that can refer to various concepts, but it is most commonly associated with a unit of currency in Vietnam. The Vietnamese dong (VND) is the official currency of the country, used for all transactions and economic activities. It is subdivided into smaller units called "hào," although the hào is no longer in circulation. In a different context, "dong" can also refer to a sound, particularly in music or linguistics. It may describe a deep, resonant noise, often produced by instruments like bells or gongs. This sound can evoke various emotions and is used in different cultural practices around the world.