Frequency range refers to the range of frequencies within which a particular signal or phenomenon occurs. Some common synonyms for frequency range include spectrum, bandwidth, frequency band, frequency spectrum, frequency span, and frequency allocation. These terms are used to describe the range of frequencies over which a signal exists and is typically measured in Hertz (Hz) or kilohertz (kHz). Understanding frequency range is important in various fields including telecommunications, acoustics, and electronics. It plays a key role in signal processing, noise reduction, and modulation techniques. The choice of terminology used to describe frequency range may depend on the specific context and application.