The term "reflected signal" has several synonyms, including "echo", "bounce-back", "refraction", and "reflection". Each of these words denotes the same basic concept: a signal that has been redirected or bounced back off a surface. These signals are commonly used in communication and surveillance systems to detect the presence of objects or obstacles. In radar and sonar systems, for example, reflected signals are essential tools for measuring distance between an object and the system. By using various synonyms for "reflected signal", professionals in these fields can more effectively communicate their observations and analyses with one another, improving overall accuracy and efficiency.