The concepts of akrasia ("ακρασία") and acedia ("ἀκηδία") - in the context that they are discussed by Greek philosophers (including Socrates and Aristotle) - are related to (as part of their definition, both in the context and as words) a diverse group of "sub-concepts" such as joy, recreation, pleasure, euphoria, ethos ... (more related to emotional and spiritual/soul-type of properties than of mind) so it does not seem that they can be grounded down to just a knowledge/understanding ontological framework; you need something more that this.