The Barrowbrook Frontier
The world of Parthenos is host to a number of species and cultures. What follows is a list of the dialects specific to the world, and how they differ from the standard rules.
There is no de facto common language on Parthenos. Humans start speaking their tribal language; if they speak a second language, it tends to be Ostran.
There are four linguistic “families” among the various human cultures: Ostric, Maric, Tenzic and Keldyc. Each of the tribal languages belongs to one of these families. Languages from the same family are communicable to speakers of other languages in the same family with a DC 12 Knowledge (linguistics) check.
A speaker of any human language can communicate with any human with a DC 20 Knowledge (linguistics) check, owing to the same distant root that unites all of the tribal languages.
All human cultures except for the Ostral-B use the same phoneme-based alphabet. The Ostral-B use a more iconographical writing system.
A point of Knowledge (linguistics) may be spent on learning a tribal language, the Ostral-B pictograms, or the human alphabet. Knowing the human alphabet means that any tribal language other than Ostran spoken by the reader may be read. Two points of Knowledge (linguistics) may be spent learning a human language family; this allows the speaker to communicate with any speaker of that family of languages.
Goblins all speak their tribal dialect, and all the dialects are closely related to the same root language. Being able to speak one of the dialects means that communication with any speaker of any other dialect is possible with a DC 10 Knowledge (linguistics) check.
There are not enough speakers of any one goblin dialect to warrant learning a specific dialect.
Goblins all use the same crude alphabet.
There are two main elvish dialects, mutually intelligible with a DC 12 Knowledge (linguistics) check. Amaralin is spoken by the tu’a realtai and tu’a ndeor, and Threbrilin is spoken by the tribal elves. Elves start with the appropriate dialect, and either the other elvish dialect or one of the human tongues.
The giantish language, known only as Gwo-Bouch, is spoken only in ceremony, and most giants speak only a few words of it. Giants typically speak the language of their community, and learn enough Gwo-Bouch only to perform the ceremonies they have chosen to undertake.
Dwarves are uncommon and all descended from the same stock. As such, they all speak the same language and use the same alphabet. Regional accents are prominent, however, and linguistic scholars believe that, given another thousand or so years, the language might well diverge. Dwarves begin speaking Dwarven and a human dialect of their choice.
There are no orcs or half-orcs. Gnomes speak Gnomish and the human dialect of their choice. The few halflings in the world speak the human dialect of their choice, as well as bau.
Sylvan is closely related to Threbrilin, and speakers of either language can communicate with a speaker of the other with a DC 15 Knowledge (linguistics) check.
Draconic, Celestial, Infernal, Abyssal, Aquan, Terran, Ignan and Auran are available as usual, but not commonly spoken by any means.