Respiration is the physical act of inspiration and exhalation of oxygen. Gas exchange is what happens in the lungs to use the oxygen that is brought in and expel the Carbon Dioxide brought back into the lungs from the cells. Respiration is the physical act of inspiration and exhalation of oxygen.
Definition of polyphony. : a style of musical composition employing two or more simultaneous but relatively independent melodic lines : counterpoint.
Cacophony literally means harsh, jarring sounds--sounds that do not sound good together. In literature, cacophony is used to refer to words that have a harsh, jarring sound. Instead of the text being rhythmic or pleasant, the text is unmelodious. Beware the Jabberwock, my son!