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.
pl. pedÂ·antÂ·ries. 1  The ostentatious display of academic knowledge, or undue attention paid to minor details or formal rules: His detailed research was dismissed as pedantry. 2  An instance of pedantic behavior: grew tired of his pedantries.