Common

Common is a relative term used to denote the most prevalent human language spoken in a particular region. For instance,

Taldane is the most widely spoken language on the continents of Avistan and northern and eastern Garund and so is referred to as Common in the Inner Sea region. In western Garund, however, the Mwangi language is used as the lingua franca. In Tian Xia, the most widely spoken language is Tien, and so that is classed as Common on that continent. It may be that on other continents, other human languages are classed as Common.