The later wants noise and the former has silence, either in opposition or acceptance of paintings inherant quietness. The same is true of movement, one craving it in excess and the other accepting its lack of prescence. It is control vs excess, in formal terms balance, harmony and symmetry vs chaos, disharmony and asyymetry.

The melodrama is the theatrical. The desire for a constructed idealism.

The melacnholy is the real. The acceptance of the humble and mundane, a quiet sublime.

The melancholic image alwyas saeems to be the musing of a found subject/image

The melodramaitc image is always constructed, always stage, always actively created.