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.
Homophony is a texture of music that has one main melody line with a chord structure underneath. When individual parts provide this chord structure under the melody, such as in four-part hymns or barbershop quartet music, the melody and harmony must use the same rhythm.