Reverberations, CONSEQUENCES, ECHOES, and Echos are all terms that refer to the reverberation of sound or an idea. Reverberations is the longest term of the four, with 13 letters, and refers to the sound waves that are reflected off of surfaces and repeated multiple times. CONSEQUENCES, with 12 letters, is a term that refers to the results of an action or event. ECHOES, with 6 letters, is a term that refers to the sound waves that are reflected off of surfaces and repeated multiple times. Lastly, Echos, with 5 letters, is a term that is similar to ECHOES, but is used more often in literature to describe the repetition of an idea or phrase.