إِفْرَادًا وَقَلْبًا وَتَعْيِينًا
Restriction addressing supposed combination, reversal, and uncertainty.
The mechanism of restriction through ghayr is one matter; its aim in relation to the listener’s prior belief is another. It may dispel belief in several simultaneous attributes (ifrād), reverse a contrary judgment (qalb), or resolve hesitation between alternatives (taʿyīn).
The form alone does not decide which aim is active. The interlocutor’s state and the surrounding discourse supply that information.