There are several synonyms for the word "Euros" that are commonly used. Some of these synonyms include "Euro dollars," "European currency," and "EUR." These terms refer to the currency used by countries in the European Union, which includes 19 countries as of 2021. The Euro was first introduced in 1999 and has since become a widely accepted form of payments and transactions across the continent. While the Euro is the primary currency used in the EU, some countries still use their own currency in addition to the Euro, such as the British pound in the United Kingdom.