What is the difference between movement of flower in sunflower plant and closing of the leaves in the Mimosa pudica.?

Sunflower moves from east to west during day time in direction of sun and this movement is called heliotropism i.e. movement of flower in response to stimulus sunlight. Again in evening time it moves from west to east direction. The leaves of Mimosa pudica droops down when touched and this is an example of thigmonasty i.e. movement of leaves in response to stimulus touch.