MechanismHow to recognize itSource example
Form-basedOne inflectional form used for a shared traitمِنَ الْقَانِتِينَ
Form versus meaningSemantic address overrides overt nominal perspectiveقَوْمٌ تَجْهَلُونَ
Naming-basedOne name put in the dual for two referentsالأَبَوَانِ، الْقَمَرَانِ
Determine whether predominance lies in morphology, person perspective, or collective naming. These should not be collapsed into one syntactic rule.