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.
An Abdominoplasty, commonly called a Tummy Tuck, is a major surgical procedure in which excess skin and fatty tissues are removed from the lower abdomen, and the muscles of the abdominal wall may be tightened. Once stretched by pregnancy or weight gain, the abdomen often fails to return to its original shape.