An objection to analogy should identify a defect in its reasoning, not merely express dislike of the conclusion. Denial of the attribute challenges the presence of the alleged factor. Denial of the original ruling challenges the rule said to exist in the source case.
Reversal (qalb) uses the argument to press an opposing conclusion. 'Aks, fasad al-wad', farq, naqd and mu'aradah challenge other aspects of the construction.
For example, failure to find the relevant attribute in the new case concerns the cause's presence. Finding the proposed cause without the predicted ruling may raise a counterexample problem.
A sound response addresses the exact point disputed rather than merely restating the definition of qiyas.