*Aelfini Regnum: The name of the Aelfin citystates which arose after the First Ones disappeared.
*Arisen: Changed Ones which have been created by the possession of corpses by the Mists.
*Calling Ceremony: A vile ceremony in which the Changed Ones use living sacrifices and unhallowed rituals to destroy and undermine Oldstone.
*Changed One: A foul entity created when the Mists possess a living (or dead in some cases) host.
*Clanfort: The name given the subterranean dwarven fortress-towns in the 4th Age.
*Cyst: A strange biological entity about the size of a human heart (which it roughly resembles) created by the Mists using unknown arcane technologies.
*Deep Scouts: Members of the Ward Watch who operate beyond the walls of Ul-Solaria.
*Encysted: A Changed One created when a Cyst is implanted in a living host.
*The First Ones: The mythic race of beings who created many of the races currently inhabiting Umbraelis as well as several ruins which remain today.
*Mists: The foul power which arose from the depths of the earth to devour the living and almost destroyed civilization at the end of the Fourth Age.
*Oldstone: Term given to the fused-stone constructions of the First Ones.
*Redoubt Cities: Also known as the Ten Cities.
*Skycoach: A popular mode of transportation among the nobility of Umbrealis. It is an intricately carved coach made from silvery soarwood and can usually carry 4-8 passengers along with a coachman and two guards.
*Uldencraft: An ancient alchemical method of hardening stone known only to the dwarven Clan Brannoc.
*Whisperstone Network: A linked network of stones enchanted with permanent versions of the spell Whispering Wind.