اختصاصه بفضيلة لا توجد في الأول
The new composition possesses an excellence absent from the original.
A change of vocabulary does not automatically make the later poet praiseworthy. There must be an identifiable expressive gain. The main possibilities are better composition, concision, clarification and an addition to meaning.
They are not interchangeable. One recasting improves word order; another expresses the thought more economically; another resolves ambiguity; another contributes a new nuance. Several merits may coexist in a single revision.