There are words like proximal and distal that can be used to describe an object (part) with respect to its distance from the body's vertical centerline. Is there something similar that can be used to described the relative distance from the waistline?
i.e. You can't use "upper" or "lower" because they're absolute. I am looking for something more like "inner/outer" or "proximal/distal".
The best I can describe is earth - "equatorial" would be centerline - "tropical" could be close to the equator, "arctic" would be towards the poles. The importance being, "tropical" and "arctic" (zones) would describe those both north and south of the equator.
The two "arctic" rings are the same, as are the two "tropical" ones. i.e. I want names that identify each, and indicate their appropriate allowable positions.
For example, I am looking for words that mean "closer to the poles" vs. "farther from the poles".