It didn’t take long to get to Friday this week. Here is a worksheet on the Greek roots phon/o, -phone and -phony. They mean, as you have no doubt inferred, sound and voice. I’ll further assume that you realize this is a very productive root in English, with, if nothing else, the word telephone growing from it.
If you find typos in this document, I would appreciate a notification. And, as always, if you find this material useful in your practice, I would be grateful to hear what you think of it. I seek your peer review.