Cognitive and cultural embeddedness: combining institutional economics and economic sociology
According to this, pederasty is sexual relations between two males, especially when one of them is a minor. Other definitions, like the one that JSBangs found, differ slightly. But otherwise, I think you answered the question yourself: pedophile refers to the attraction, while pederasty refers to the act itself.
Abdominoplasty (tummy tucks) is a metabolic surgery designed to produce malnutrition. Energy deficit occurs due to low food intake, food intolerance, and nutrient malabsorption. Abdominoplasty (tummy tucks) aim to achieve malnutrition to lose weight but without complications.