Elemental Gelade - Terminology

Terminology

Arc Aile - An organization that "aims to protect the Edel Raids, as well as provide them with happiness". Little is known of their true intentions regarding Edel Raids, especially Ren.
Chaos Choir - Otherwise known as Organite, a group who opposes Arc Aile. Most members are Sting Raids or Edel Raids.
Pledger or "Pleasure" - One who has Reacted with an Edel Raid. Also called User in some places.
React - To merge with an Edel Raid, thus gaining their power.
Edel Raid - A female entity capable of Reacting with a human and becoming a weapon. An Edel Raid can only have one Pledger at any time; to take a new Pledger, the old one must first die. Edel Raids are also capable of using "songs" (謳), which are the equivalent of magical spells. If their elemental gelade is removed, they turn into normal humans.
Sting Raid - Otherwise known as Viros in the manga, it is an imitation Edel Raid, possessing lesser powers than that of true Edel Raids. (3 Edel Raids can finish off entire armies of sting raids) They are actually created with imitation elemental gelades or elemental stones. They are generally treated as tools by the Chaos Choir. Sting Raids are also different from Edel Raids in that they don't need a Pledger to react with, they can transform a part of their body.
Garden of Eden or Edel Garden - Where Edel Raids are born.
Elemental Gelade - A gem that is embedded on the Edel raid's body. It is proof that they are an Edel Raid. It is also stated to be their soul.