1 Hourglass: Torso and hips are approximately the same width - with waist definition.  Apple: Torso and upper body wider than your hips - with little or no waist definition. You might have weight surrounding your waist.
From a legal point of view, a merger is a legal consolidation of two entities into one entity, whereas an acquisition occurs when one entity takes ownership of another entity's stock, equity interests or assets.
Generally it has been observed that cross border merger and acquisitions are a restructuring of industrial assets and production structures on a worldwide basis. It enables the global transfer of technology, capital, goods and services and integrates for universal networking.