I'm stealing Wildsea's language rules for now, but it probably won't come up in this game.
Languages
Languages you know are given a rank from 1 to 3. Unlike expertise, these ranks are named: Scrap, Proficiency, and Fluency.
You don't need to roll the dice to benefit from your language ranks— if you have a scrap of Spiacian, you'll be able to converse with others that speak it... to a degree.
You'll use your languages draw on cultural knowledge and gain information.
You can also use them to make friends, impress others, and gain insider intel.
Scrap
Having a scrap of a language allows you to use and understand simple words and sentences without a problem. You can order food, ask about common topics, and pronounce names with reasonable accuracy.
Proficiency
Having proficiency of a language allows you to engage in normal conversation without a problem; you can discuss a wide range of topics, give opinions and directions, and easily follow conversations at the speed of a native speaker (even if you miss a word here or there).
Fluency
Having fluency in a language shows you have complete mastery of it— you can read, write, listen, and speak without the fear of misunderstanding or being misunderstood.
Rhonic
Rhonans speak Rhonic
Faervig
Eerdans speak Faervig
Iklomas
Kyrosans speak Iklomas
Getur
Saalzychers speak Getur
High Gethorian
Praudians speak High Gethorian, an older form of Getur
Spiacian
Spiacians speak Spiacian
Elvish
Elves speak Elvish
Dwarvish
Dwarves speak Dwarvish
Slyvan
Most of the Fae speak Slyvan
Thieves' Cant
A clipped and precise language used by experienced thieves. Knowledge of Thieves' Cant is likely to garner respect among grifters and ire from merchants & honest folk who recognize it. Relies partly on gestures.
Signalling
An unspoken code broadcast with flags, torches, or signal-lamps, often known by experienced travellers, military types, merchant vessels, and smugglers. Relies partly on color.