IssuePrimary focusKey distinction
Implicit metaphorRecovering an unstated sourceMovement from attribute to image
Imaginative metaphorAttributing a source property to a targetMental image versus external actuality
Literal/figurative usageAssigned versus employed meaningAssignment, interpretation, and clue
The first two entries reflect an approach distinguishing the unstated source from the attribution of its attribute. Other schools may locate the metaphor differently. The point is to preserve analytical distinctions, not to claim that every school uses the same labels.