Tongan Monetary Unit refers to the official currency of Tonga, which is the Tongan pa'anga. However, there are several synonyms for this term that individuals may come across when dealing with financial transactions in the country. One alternative name is simply "pa'anga," which is derived from the same word as the primary name. Another term that may be used is the "Tongan dollar," which reflects the pa'anga's similarities in value and usability to the U.S. dollar. Additionally, the pa'anga may be referred to simply as the "Tongan currency" or even the "Tongan coin." Regardless of the name used, the Tongan pa'anga is an important part of the country's economy and daily life for its inhabitants.