Witcheries are what people call specific magics on the continent, and they are linked to six elements-four "physical" elements: Earth, Water, Air, and Fire, and then two abstract elements: Void (associated with death) and Aether (associated with life).
Of the six elemental magics, only five are considered real. The sixth is considered a myth.
It should be noted that a full Waterwitch (for example) has complete control over all aspects of Water magic, while an Earthwitch (another example) would have control over all aspects of Earth magic.Such powerful , complete witcheries are rare. More frequently, we see subsets of each witchery. So Tidewitches (a subset of Water magic) is more common. The same could be said for Windwitches (a subset of Air) and Plantwitches (a subset of Earth).
No one believes the Void element actually exists, and because the element is associated with death, it has become synonymous to hell in most cultures. And since so many Voidwitches tend to be of the "dark magic" variety, they have become scary stories to tell naughty children-"Don't misbehave or the Voidwitches will get you!" Voidwitcheries do in fact exist but they are incredibly rare.
Though Voidwitcheries are often considered "bad", it really depends on whether the individual is bad (in other words, a person born of Void magic is not automatically corrupted).
Earth is the physical element associated with all things linked to the earth—from stones and metals to plants and animals. Specific types of Earth magic include Ironwitchery, Stonewitchery, Plantwitchery, etc. Earthwitchery is the most common element because it can take so many forms. Earthwitch healers specialize in bone repair.
Water is the physical element associated with both fluids on the earth and fluids in the body. Specific types of Water magic include Tidewitchery, Icewitchery, or Steamwitchery. Waterwitchery is the second most common of magics because it also appears in several forms (solid, liquid, gas). Healers associated with the fluids in the body are Waterwitch healers.
Air is the physical element associated with the sky and wind. Specific types of Air magic include Windwitchery or Stormwitchery. Airwitchery is the third most common magic and is the least tangible of the physical elements—but it is also everywhere, making it a more common element than Fire. Airwitchery is associated with the lungs, so Airwitch healers specialize in pulmonary health.
Fire is the physical element associated with heat and flames. There is only one type of Firewitch, and that is a Firewitch. Firewitchery is the rarest of the physical elemental magics. Firewitches tend to be amongst the deadliest simply because of the combustible nature of the element. Healers associated with the muscles in the body are Firewitch healers.
Aether is the abstract element associated with life and the spirit/soul. Specific types of Aether magic include Threadwitchery, Truthwitchery, Wordwitchery, Voicewitchery, etc. It is much more common than Voidwitcheries, though still far less common than Earth, Water, Air, or Fire. Aether is associated with the brain, so an Aetherwitch healer would specialize in emotional/mental health.
Aether is said to be the purest of the elements and Aetherwitcheries are often considered “good", though it really depends on whether the individual witch is good.