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.
Also found in: Dictionary, Medical, Wikipedia. An agreement between two parties, usually two companies, outlining the rights and responsibilities each has for a particular venture or project. A memorandum of understanding is intentionally vague and is usually the first step toward a full contract.