Bender is a person who has dexterity in the wielding and handling of one of the four elemental forces. Most benders can bend only one element. There are though some anomalies that allow a select number of bendes to manipulate more than one element.
History
According to Book the First of The Incipiens, the first bendes to
Types of Bender
Water Bender
Fire Bender
Air Bender
Earth bender
Rarities
It's believed that 98.4-99.2% of benders have access to one element. Those who exceed those are
Diontine
Benders who can bend two elements
Triontine
Benders who can
Elemental
Anomalies
Envisioner
All benders and underworlders possess the Vision but those who have full access of the it and thus can "see" through people and ... objects as some Northerners are called Envisioners.