These are the descriptions of Alignments - each intelligent creature's beliefs based on their varying degrees of good, evil, law, chaos, or the balance between those.
Alignment Languages
Each alignment has a sort of 'language', more like a bunch of words and phrases that are commonly known to speakers of that language - not really a full spoken language. These languages are somewhat geographically dependent; as travel among continents isn't that common, your ability to converse in your alignment tongue from somebody from another continent would be severely restricted - possibly only some simple phrases and words, about on the level of a small child's grasp of the language, at most.
There's nothing really stopping a person of one alignment from learning another alignment tongue, if they could find someone to teach it to them, and nothing really harmful in being 'caught' speaking the wrong tongue, either. In the long run, it's a very basic way to be able to communicate a little bit with someone who doesn't speak a true language.