Example 1: “Knowledge is like light in guidance” — one intellectual ground, so non-tamthil.
Example 2: “Flashing swords through dust are like stars falling across a dark night” — a structured image, so tamthil.
Example 3: “A face is like the moon in radiance” — a specific ground, so non-tamthil.
In the second case, the relation among visual parts creates the likeness. In the others, a single property suffices.