Counterpoint

In music theory, counterpoint is the relationship of two or more simultaneous musical lines (also called voices) that are harmonically dependent on each other, yet independent in rhythm and melodic contour. The term originates from the Latin meaning "point against point", i.e. "note against note".

type of dissonance in polyphonic music

two consecutive perfect fifths that take place between the voices, achieved through parallel motion

movement of two melodic lines with respect to each other