- Drift: Cascadea district; five total, each with its own chair.
- Hollow: Stonefall strata; lower hollows grow rough and lawless.
- Ascension Zone: Field around Floatstone Towers that keeps sky farms and ships aloft.
- Floatstone: Levitation ore refined and guarded in the Isles.
- Black Tides: Dangerous sea corridor bordering the Isles and Iyresa.
- Council of Three: Ruling body of the Aetheris Isles.
- Council of Drifts: Cascadea leadership representing the drifts.
- Black Basin Syndicate: Stonefall crime power.
- The Three Pillars: Isles’ triune faith.
- The Hollow Flame: Stonefall lower-hollow creed.