Dictionary

Affinity: the ability of a person (and possibly animals) to reorient AND the side-effects
Affinitive potential: how much is something able to reorient or for a person to use their affinity at a given point in time, depending on factors such as the degree of affinity and ambience. Almost everything has a fluctuating potential. Critically high potential can cause nuon-poisoning and, over a large enough area, lightstorms.
Affinitive displacement: When a person loses their affinity or an object loses its reorientation due to the presence of something with higher affinitive potential.
Ambience: The measurement of the number of threads in a given area.
- Equitorial ambience: The level of ambience on the surface of Ereya at the equator, which is the "safe" level of ambience for human survivability.
Ambience corrosion: The loss of baseline properties and subsequent disintegration at a molecular level due to the instability in reality in areas of high ambience.
Bender: People with true affinity (everything excluding passivity), with the ability to "bend" threads at will.
Degree (affinity): The overall level of one's affinity.
Kachasān: A synthetic material chemically similar to living flesh used to provide protection against nuon-poisoning
Lightstorms: Natural reorientation resulting in a 'rain' of light
Nuon (Fox-Kamiya particles): Particles travelling in straight lines through space, time and matter that cause weird shit to happen when they are pulled from their path.
Nuon-poisoning: A different term for ambience corrosion
Reorientation: a material's ability to alter the path of nuons as they travel through space
Thread (affinitive mechanics): Nuons travelling in a line through space-time
Szardiye: An alloy of iridium with orientating properties.