Facsimile machines, also known as fax machines, have been a vital tool for sending and receiving documents electronically for decades. However, there are several other synonyms for facsimile machines that can be used in various contexts. One such synonym is fax devices, which is typically used in a technical context. Another synonum is copy machines, which is more often used to refer to the photocopying function of these machines. Telecopy machines is another synonym that emphasizes the device's ability to transmit documents over a telephone line. While fax machines are still commonly used in business settings today, they are slowly being replaced by digital alternatives such as email and online document sharing platforms.