In this paper I deal with chapters 16-30 of Aristotle’s Metaphysics Book Δ (V). The main aim is to provide a map of their argument. Despite each chapter seems to be devoted only to the analysis of the meanings of a single philosophical term, I shall demonstrate how their ordering is far from being accidental. Each chapter is indeed thematized by its previous one/s and meant to deny relations of convertibility between concepts.
Keywords: Aristotle, Metaphysics, Terms, Concepts, Convertibility.