When you repeat the same word again and again in a few sentences that follow each other, but the repeated word changes meaning in each new sentence or part of a grammatical structure. Probably the most known example of this rhetorical device comes from one of the greatest citizens the USA has ever had, Benjamin Franklin. While debating an opponent once Franklin reportedly said: “ Your argument is sound… all sound“. A wonderful piece of wit combined with the right kind of rhetorical device. He is playing with the meanings of the word sound, which could be something stable and correct and also just noise.