Kier - Ruler of the kiereddas. Formerly the Kier went through a binding ceremony to ensure the health of the land, but since the fall of Sar-Ibis this has not occurred.
Kierash - The only title given to an heir, the Kierash is the Kier’s designated successor (usually the first-born child, unless the Kier has specified otherwise for reasons of incapacity).
Kiereddas - Previously Sar-Ibis, which was a large, narrow island with no near neighbours. Kiereddas translates to the land and did not originally envisage that there be other lands. The Kiereddas of the Ibisians now encompasses Palladium, Ibsa, Holt Harra, Laskia and Iskand.
las - An Ibisian naming custom indicating the clan the person belongs to. Members of the Cor-Ibis clan are referred to as las Cor-Ibis. The only exception is the current head of the clan, who is referred to simply as Cor-Ibis.
Niadril - A word used to refer to Kier Ieskar after his death. It combines a meaning of great, eternal and doomed.
Sar-Ibis - The Land of the Ibis. A large, narrow island with no near neighbours, it was mountainous and fertile, with relatively mild winters. It was consumed completely by a combination of the Blight and earthquakes.