Radio is a device that is used for transmitting and receiving sound waves from distant sources. Synonyms for radio include wireless, receiver, transceiver, tuner, broadcast, and frequency. Wireless is a term that is used to describe radio technology. Receiver refers to the device that receives radio signals. Transceiver is a term for a device that can both transmit and receive radio signals. Tuner is a term used for a device that is used to tune in radio stations. Broadcast is another word used for transmitting radio signals. Frequency refers to the frequency of the radio waves being transmitted. These synonyms all describe aspects of radio technology and its use in communication.