A pager-phone system is a communication device that allows one-way and two-way communication between two parties. It has several synonyms, including wireless messaging device, alphanumeric pager, texting pager, and two-way pager. A wireless messaging device is a small, portable device that uses wireless communication technology to send and receive text messages. An alphanumeric pager is a small device that displays alphanumeric messages. A texting pager is a simple device that allows users to send and receive text messages. A two-way pager is a messaging device that can both send and receive messages. These are all synonyms for a pager-phone system and are useful for effective communication in various settings.