There are few bits and pieces of Yalain words and writing scattered across Dereth.
From this Stormwaltz quote we learned two words:
Bael = Slayer
Zharon = Hope
Bael'Zharon = Slayer of Hope
Lyceum = School of Magic
Inscription on the Crescent Moons:
Ai liat sauli paerai ai daekau
Inscription on the Scepter of Thunderous Might:
Ae sa ai liat sauli baerai zharon
Alb'arel and Rez'arel are the names of the moons of Auberean.
Collegiums at Knorr: Acumen Manim, Artificae, Aegis Medi, Heiromancy, Conjurae, Geomancy, Prae Auspi, Entropica, Ignae Fatae, Organis, Planar Abstraction, Tempae Invectae, Occultus