Since Shadow has no Int bonus, he just gets stuck with common.
Also, for Zook, I just realized he gets Gnome automatically, so his languages are taken care of as well.
The most common languages:
Ledean (Common): The dead language of the Empire of the Wheel, Ledean is the tongue of trade and diplomacy, as most everyone knows at least some of it, and most modern human tongues were, once, dialects of Ledean that rose after the fall of the empire.
Albadian: The language of the cold northern regions of Ghelspad, which seems to be derived from an Elven dialect.
Calastian: The dominate language of southeast Ghelspad with the rise of the Calastia's hemogony in the region.
Darakeene: A corrupt form of the language of the dark dwarves, it is a wide-spread, but hodgepodge, language left as a remnat of the near total conquest of Ghelspad by the dark dwarves just before the Divine War.
Shelzari: Widely spoken across souther Ghelspad, it is the language of choice among sailors.
Veshian: Actualy a number of related languges used in eastern Ghelspad, derived from old Ledean.
Middle Elven: The only elven tongue common in Ghelspad, it is very closely related to Albadian.
Titan Speech: A number of related languages used by the Titans to communicate with their creations, with each Titan possessing it's own dialect. Since the defeat of the Titans, the languages have fractured into a huge number of dialects, collectivly known as Dark Speech. Each race of titanspawn has it's own form of the tounge, and countless variations exist within regional and tribal devisions.
Arcanium: The language of magic. In reality, this tongue is the Titan Speech of Mesos, and is the best preserved of all the forms of Titan Speech. However, most magic-users do not wish to be associated with a Titan, so the name has changed so that few beyond scholars know the true history of the languge. In truth, most spell casters are not taught the source of the langauge these days.
Sylvan: A mixture of the Speech of Denev and Elven, it has become the common tongue of worshipers of the Earth Mother and her creatures. Since many in Ghelspad still view the worshipers of Denev as Titan Spawn, in spite of her siding with the Gods in the Divine War, the usage of her true Titan Speech has become a liability, and seems to be a dying tongue.
Vangal's Tongue: Presumably an import from Termana, it has become the common tongue of the horsemen of central Ghelspad.