Aether as a definition, is the mana essence of existence. It's split into two:

World Mana (ambient mana)

Life Root (the soul, the heart)

Tezhe are unique manifestations of a person's life root. Depending on its effect, one's Tezhe categorize them into pathways and division.

Division has two divisions: Parent Division and Child Division, which is under the parent division. Parent division are broad brackets e.g., Energy Force Division, Body-Augmenting Division, Cognition Division. Examples of Child Division: Telekinesis, General Body Enhancement, Mind Optimization.

Pathway of the Physical - The path rooted in the mundane, physical world. 

1. Body Augmentation

2. Objects

3. Entities

Pathway of the Will - The path focused on one's will, forcing your will upon the world in certain aspects. Lies between the physical and the 

4. Cognition

5. Psychological

6. Elements

7. Energy Force (reason why this isn't part of the concepts is because it has relations to physical force, different from the concepts which are utterly fundamental and does not correlate to physical force)

Pathway of the Concepts - The path focused on the intangible fundamental forces of the world. 

8. Relativity

9. Light

10. Fate

11. Essence (Spirit/Soul/Aether)

Each Tezhe ability has five ranks of Minor, Intermediate, Advanced, Mastered, Exalted. Talented Tezhe holders may be born with a higher rank. Once one has reached Exalted rank, they have complete mastery of the Tezhe's aspect. 

Awakening one's Tezhe also grants ease usage of the Aether World Mana to manipulate imagined spells. 

These spells could be chanted or chantless, depending on the spell complexity, skill of the user, and the amount of Aether one has. Chantless consumes more Aether. 

However, leveling and evolving your Tezhe would make your own Life Root more robust and rigid until eventually your whole body is conditioned to only use Aether in the way your Tezhe works. Forming imagined spells outside your Tezhe ability becomes impossible.

Some factions exist focusing solely on ranking up Tezhe, Aether Spell manipulation, or a mix of both.