The language of the elves, with many dialects.
Wyld Sylvan has a gentle and ethereal tone, with no harsh sounds or hard stops. It's spoken by the Faelin in The Wyldhaven and Novawyld.
Ryft Sylvan is elegant and graceful, often thought to be a little harsher of a sound than Wyld Sylvan. It is spoken by the Elvar in Ebonryft, Umbryx, or other Elvar areas. When a speaker of Ryft Sylvan talks to a speaker of Wyld Sylvan (or vice versa), to both of them, it sounds like the other is speaking in a broken and heavily accented way. Overall, communication is not too difficult, but nuance and complexity might escape them.
Jinshese Sylvan and Shinrese Sylvan are spoken in Kyoshu, namely Jinshin and Empire of Shinryu, respectively. They sound the same to outsiders, but to the Jinshese and Shinrese, they are actually quite different and barely understandable to one-another. These languages are precise and beautiful, yet complex and difficult to learn. Compared to Wyld Sylvan and Ryft Sylvan, there is simply more, so the Jinshese and Shinrese can understand Wyld and Ryft, but the other way around is difficult.