Naskh and intiḥāl concern the taking over of the earlier wording and its arrangement as one's own. Ighārah and maskh involve substantial verbal taking with rearrangement, or the taking of some original words. Ilmām or salkh principally takes a distinctive idea while changing the verbal formulation.
TypeObject takenDiagnostic question
NaskhOriginal wording and orderWas the expression reproduced as it stood?
Ighārah / maskhWording with alterationWhat was rearranged or partially taken?
Ilmām / salkhDistinctive ideaHow independent is the new verbal form?
The further judgement—more eloquent, equal or inferior—is separate from identifying the kind of borrowing.