There are several synonyms for the term "electronic money," which is essentially a digital form of currency that is stored and transferred electronically. One common synonym is "digital currency," which refers to any form of currency that exists in digital form. Another synonym is "e-currency," which specifically denotes electronic currency that is used for online transactions. "Virtual currency" is another term that is often used to describe digital forms of currency, such as Bitcoin and other cryptocurrencies. Additionally, "mobile money" refers to electronic money that is accessed and used through mobile devices such as smartphones and tablets. Overall, these synonyms all refer to the same concept of digital currency that is stored and transferred electronically.