A "phone-in show" can be described as a program where listeners are invited to call in and participate in the conversation. There are various synonyms for this term. "Call-in show" stresses the invitation to phone in. "Talk radio" suggests a radio program that features discussions on current events or social issues. "Interactive show" highlights the two-way communication between the host and the audience. "Live show" emphasizes the immediacy of the program. "Audience participation program" refers to any show that involves participation from the audience. Overall, there are many words that can describe this type of program, each highlighting a different aspect of the show.