في اصطلاح به التخاطب
Within the convention according to which the conversation is conducted.
A term can acquire an established technical meaning within a discipline or community. Ignoring that convention and relying only on an older general sense may misclassify an ordinary technical usage as figurative. Discourse convention therefore concerns the recognized linguistic assignment in operation.
A separate condition remains important: a figurative use normally has a contextual clue preventing the literal interpretation. Identifying the governing convention and identifying the prohibiting clue are different functions: the first defines the benchmark; the second determines how a particular utterance departs from it.