Resonance frequency refers to the natural frequency at which a system vibrates most strongly. Synonyms for this term include natural frequency, eigenfrequency, and characteristic frequency. These terms are used interchangeably in physics and engineering to describe the frequency at which an oscillating system reaches maximum amplitude. Resonance frequency is an important concept in fields such as acoustics, mechanics, and electrical engineering where the interaction of waves and vibrations is crucial. Knowing the resonance frequency of a system can help engineers design better-performing devices, identify potential problems, and troubleshoot issues that may arise during operation.