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.
Mutual understanding plays an important role in fostering stronger interdepartmental communications, too. Step into the other's shoes, recommends Dr. Whybrow. If you're an engineer meeting with a sales person, take a moment to consider, what does this look like from the salesperson's perspective.