In reverse rarity order for the sector:
- Guildern (trade language)
- King's (aka Terran)
- Nihon (aka Pan-Asiatic)
- Countless unique system-specific languages
Most everyone in the Coality speaks Common. Isolated or low-tech worlds will speak a local dialect which is generally understood by Common speakers. In addition to Common, there are many Second-Age and even First-Age languages and dialects bouncing around. The most frequently encountered are listed above. Again, isolated worlds could speak dialects of the parent language.
There are no dialects of Guildern, which was designed as a written trade language of limited scope. Similarly, written Mandarin does not vary with any system-specific spoken dialect.
In addition to the above human language, there are the following chimeric racial languages, again in reverse rarity (although all of them are rarer than any of the above):