Exergonic is when energy is released. In contrast, endergonic requires energy; it absorbs free energy. Magnitude of ΔG for an exergonic reaction represents the max amount of work a reaction can perform. Catabolic is when energy is released and anabolic is when energy is consumed to build complicated molecules. Logically, exergonic would match with catabolic because both is when energy is released. In that train of thought, endergonic would match with anabolic, as energy is consumed/required.