Airwaves refers to the medium through which radio waves are transmitted and received, allowing communication over long distances. There are several synonyms for the word airwaves, depending on the context in which it is used. One such synonym is frequency spectrum, which refers to the range of frequencies within which radio waves can travel. Another synonym is electromagnetic spectrum, which includes not only radio waves but also other types of electromagnetic radiation. A third synonym is broadcast spectrum, which specifically refers to the portion of the frequency spectrum that is allocated for broadcasting purposes. Other possible synonyms include radio spectrum and wireless signal.