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.
A mingling or union of harsh, inharmonious sounds that are grating to the ear. EUPHONY (YOO-fuh-nee). Harmony or beauty of sound that provides a pleasing effect to the ear, usually sought-for in poetry for effect.