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.
Pederasty is the archetypal example of male age-structured homosexuality. Geoffrey Gorer and others distinguish pederasty from pedophilia, which he defined as a separate, fourth type that he described as grossly pathological in all societies of which we have record..ederasty is the archetypal example of male age-structured homosexuality. Geoffrey Gorer and others distinguish pederasty from pedophilia, which he defined as a separate, fourth type that he described as grossly pathological in all societies of which we have record..