Dhakāʾ concerns acuity and strength of understanding. ʿIlm concerns knowledge or apprehension of a subject. Intelligence may assist the acquisition of knowledge, but the two qualities are not identical.
Ghaḍab is an emotional movement that may incline toward retaliation. Ḥilm is a disposition of restraint and composure when provoked. Forbearance is more than simply “never becoming angry.”
Comparing two people in intelligence does not assert identical knowledge. Likewise, absence of a raised voice may be an outward sign of forbearance, but the point of resemblance is the inward disposition, not merely quiet speech.