phone
sound
phonograph
(graph - write, draw) writing with sound
telephone
(tele - far away) sound from far away
phonogram
(gramma - letter) written sound
euphony
(eu - well, good) good or pleasant sound
symphony
(sym - together) sounds that go together
megaphone
(mega - big) device to make sounds big
microphone
(mikros - small) device to transmit or record small sounds