Planes

Humans have a fetish for separating things, and putting them in neat well defined boxes. This reflects itself in the elemental planes. While magic is everywhere, in everything and all jumbled together under normal circumstances, Planar magics allow for that essence and the things it is bound to to be separated into discrete regions known as Planes. Despite this, magic wants to behave as it does in nature, and so walking these planes is often an exercise in frustration as often arbitrary seeming actions can shift a plane walker between discrete and unified planes. 
Discrete planes
* Fire - Everything that burns, no matter how briefly, is part of the plane of fire, including what was burning but isn't anymore. There are three primary camps within this plane; Destruction, Refinement and Renewal. 
* Water - All things that get wet, are, if only briefly, connected to the plane of Water. There are 4 primary camps in this plane; Sea, Pool, Flow and Chemistry. 
* Earth - The plane of earth is a bit different than most people expect, as outside of the prime elemental plane it doesn't contain magma or Lava or groundwater. The plane of earth has 5 primary camps. Dirt, Stone, Ore, Mineral and Gem. It overlaps with the Plane of Metal rather than wholly containing it, primarily due to a conflict between various spiritual philosophies. 
* Air - The plane of winds is difficult to separate from the plane of water, due to how often the pair interact on the prime elemental plane as Storms. These storms form a number of different camps within the plane, differing largely based on people's feelings about them. Snow and blizzard for instance, have different areas as do rain, thunderstorm, tornado and Hurricane. Sand storm, Dust storm and Haboob also have sufficiently different spiritual meanings to form their own regions, though mostly due to having formed in different regions of the planet. 
* Metal - The plane of Metal is an Odd one. It contains mining, industry and poison as major camps, but of the three, only industry isn't fighting to remain separate from another plane. This is largely because of a difference in continental philosophy. One believes metal to be the product of the earth, while the other sees it as it's own unique place in a cycle. 
* Life - All that lives, while it lives, has a connection to the plane of Life. It's camps are generally divided into plants, animals, reptiles, birds, worms, fungus and insects. The plane itself is a seething mass of flora and fauna that exist in an endless cycle of predation where everything is eating everything else in a constant war for survival. 
* Death - All that lives, must die. And so too, must there be a place where the dead gather. While not the origin of souls, the land of the dead is where most new souls are manufactured, waiting new host lives. To facilitate this cycle, afterlives are forged whereby the dead can be relieved of their anima in such a way that the core of the being does not die, and new cores can be formed from what is harvested. That which is not suitable to become a new soul is then collected and forged into the structure of the plane of death. 
* Light - Composed of three opposing camps, Heaven, Yang and Solar; the three forces of creation, the plane of light is often called The High Heavens by those who are not aware of it's cosmology.
* Dark - Composed of three opposing camps, Hell, Yin and Entropy, the plane of Darkness is often called The Burning Hells by those who are not aware of it's cosmology. Or the fact that an invasion by the plane of light is why the hells burn at all. 
* Chaos - Formed by the conflict between the planes of Light and Darkness, Chaos is a plane that defies easy description. Rules are broken here, morality, even evil, cannot confine it, and the only constant is madness. Those who seek freedom always find themselves in need of a touch of chaos, but only a touch. 
* Order - Formed by the balance between the planes of Light and Darkness, Order is the root of the Prime Material Plane and the basis by which all magical systems are believed to operate. This is incorrect of course; order is instead the most common, because it is the most stable; and mortals tend to be myopic. 
Unified Planes
* The Celestial Plane - a space that mixes the planes of Light, Dark, Order and Chaos into a single cosmic space. Often referred to in jokes as the alignment chart plane by players, it is also called the Nether, the Pandemonium and The Void by locals. It is believed by many to be the first and original plane of creation, though others justifiably contradict this notion. 
* The Elemental Plane - A space where the planes of Fire, Water, Earth, Air, Metal, Life and Death meet. It is a chaotic place that's almost a world unto itself. The number of camps here is too many to properly name, as every primary, secondary and tertiary elemental interaction is represented here. 
* The Astral Plane - A realm of pure thought, this is the realm of souls and dreams, matching the planes of Life, Death and Order. It's a complex realm with infinite interplay's so delicate many confuse it with chaos; but the element of chaos only exists here as fits and spurts, as all elemental planes are woven together on the Prime Material Plane.
* The Feywild - Light and Dark, Life and Death, the fey wild is a realm of spiritual parasites; though some would insist their nature symbiotic instead. The Fae are ghosts in the machine, spirits formed exnilo from anima without either worship or life to offer them structure, and in defiance of the law of spiritual entropy. Despite this however, they cannot entirely escape the rules, and so prey upon the spirits and spiritual residue of others. They form two cults, the courts of Summer who feed by inspiring their victims and Winter who embrace their predatory nature.
* The Jiang-hu - Order, Light, Dark, Life, Fire, Earth, Metal and Water; the wheel of the east is probably the most orderly plane of existence beyond the plane of order itself.