These are two different categories. Evening dress generally refers to the activities of the dress in the evening, but is not specifically for style. Dress suit is generally refers to the style of dress, usually is refers to the long gowns and dresses. And the matching is a small formal attire, usually is refers to the short dress, general grand occasion is suitable for wearing long gowns. Relaxed occasions or special occasion wear short dress.

Evening dresses have rich, more 'exaggerated' styles, while morning dresses are simple and they look absolutely gorgeous anyways