Ḥusn and qubḥ do not always carry one technical sense. They can refer to what pleases or displeases human nature, to perfection and deficiency, or to what deserves praise, blame, reward, or punishment.
A bitter medicine may be unpleasant to the taste yet beneficial in treatment. Likewise, an action that appears attractive is not necessarily religiously permitted.
When an act is called bad, the relevant respect must be specified: sensory aversion, rational perfection or imperfection, or legal and moral responsibility. Without this distinction disputants may answer different questions while using the same words.