Radiothon is a popular term used to refer to a fundraising event that is aired on the radio. In case you're looking for other words that are similar to radiothon, then there are a few options to consider. Some alternative terms include telethon, webathon, phonathon, pledge drive, and benefit concert. All these words share a similar underlying idea of broadcasting or streaming a live event that raises money for a specific cause or charity. No matter which term you choose to use, the essence of these events remains the same - uniting communities to donate and give back to those in need.