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.
Definition of post-merger integration. The period that starts at the closing of a deal but which can last from a few months to a number of years. The post-merger integration is the time in an acquisition when all of the operations of the target company are absorbed into the buyer.