Resonance means when something vibrates or reacts in response to another thing vibrating at the same frequency. It is like a strong connection or harmony between two things vibrating together. Full definition
Studies employing functional magnetic resonance imaging of the brain are beginning to reveal the neural mechanisms behind the testing effect. (scientificamerican.com)
People look for resonance in their life, which takes form in many things, including service, reliability, environment, or calling. (gapingvoid.com)
If it has some kind of emotional resonance with your audience, that's a good start. (entrepreneur.com)