The French Franc, also known as the Franc, was the currency of France until it was replaced by the Euro in 2002. The Franc was a widely recognized currency throughout the world and had several synonymous names. Some of the popular synonyms for the French Franc were 'penny', 'livres', 'sou', 'argent', 'frank', and 'franklin'. The word Franc originated from the Latin word 'Francorum Rex' meaning 'King of the Franks'. It was also used in various French-speaking territories such as Belgium, Switzerland, and Luxembourg. Despite being replaced by the Euro, the French Franc remains a part of France's economic history and cultural heritage.