Languages in Miraboria, Mistland and Narbada

Human Tongues

Greenvaler (common)

Second Empire Miraborian

First Empire Miraborian

Mirani

Harothan

Mistlander (common/Daintali)

Narbadan (common)

Shalani

Tharg (plainsfolk)

Woodsfolk/sylvan (Woodsfolk)

Nonhuman Tongues

Modern Dwarvish

Rift Dwarvish

Ancient Dwarvish

Elvish

Hobytlandish (Narbada)

Marchat (cattish)

Grippli (actually a fairly close derivative of 2nd empire Miraborian)

Orcish/Goblin (this language fragments frequently and steals from other nearby tongues - DM may impose a 1-step "related language" penalty at times for culturally or geographically separated groups)

Draconic (which is what the kobolds speak) (and ancient Draconic - but this language is very rare indeed)

Demonic

Devilish      These three languages are called such by the folk who live on the Prime Material Plane; where they are spoken they have other names

Angelic

Sylvan (Woodsfolk)

Other monster/non prime plane languages exist at DM's discretion. For example, the Giants of Mistland may have their own cultural language dating back to the days of the 1st Empire. The form they speak today is much debased, but recognizeable nonetheless). If you have a good reason for thinking you could know such a language, ask!

Human Language Relationships chart

Feats and skills that relate to language (3rd edition rule, will be updated to 5e later)

Feats:

Good with languages {General}

You get 1 rank in any language you are exposed to regularly (at least 2-3 hours per day) for at least one month of game time, or constantly (never speak or hear another language) for a week of game time (Won't raise the skill above 3). Skill points spent in languages earn 2 ranks per point. Bards get this for free at level 10.

Skills:

Read and Write: (INT; trained only) PCs whose classes require them to read and write by the nature of the class (wizards and clerics but not sorcerers) know automatically how to read and write. It is considered a class ability. Other characters must buy the skill. You need not ever spend more than one point on the skill. You know how to read and write every language that you speak. Extra skill points give bonuses to comprehending written material in languages that are related to your own (for example, Miranish and 'Valer are related; being able to read and write at skill rank 4 in 'Valer would give a bonus of +3 to the DC to read a document written in Miranish).

Speak Language: (NONE; Trained only) Speak language works differently from most skills.

Your free starting languages are at 3 for the primary language and 2 for any other(s) (plus intelligence bonus). You may increase these with skill points. The PC may always choose what his primary language is. Ex: an elf raised in Greenvale will know Elven and 'Valer. He may choose either as his primary language, depending on his character background.

Bards, who are language mongers, get a free skill point in languages every level.

Player characters who spend extended amounts of game time (12 weeks - Int bonus) in an area where they are forced to use a foreign language may gain free language ranks. Free language ranks are gained at 1 skill point per 12 weeks - Int bonus, with a successful DC 10 intelligence check, to a maximum of 3 ranks. (Also see the feat Good with Languages.)

Understanding foreign languages depends on how closely they relate to your own tongue. For each step of relationship away (see chart above) the skill level drops by 2 points. In other words a 'Valer with a rank of 3 trying to understand (or make himself understood in) spoken Miranish would do so as if he had a rank of 1 in that tongue.

In Narbada, there is one "common tongue" spoken across the three human kingdoms of Terenor, Middlemarch and Vorno - while each kingdom has a dialectic variation or three, none are significantly diverged enough to require a separate language skill. However, the Hobytlan, Dwarves and Elves all have their own tongues, which are separate skills to speak. Ancient Narbadan (aka 1st Empire Miraborian) is still understood by scholars and sages, but is not spoken by anyone else.