Polyphony is the answer to the question
“Yankee doodle” is a well-known British American song which dated by the seven years war and the American revolution
the first photo is of a natural element, hence that its nit man-made. the shape of the first photo is more geographic then the second photo.
the second photo is of a side walk, a man-made object. the shape of the second photo is of a square, a square that was man-made, had to be put in place.
