Knowledge (Regional)
This skill applies to a large cultural area, such as the Southern Coast, the Heartlands or the Western Marches. You have detailed knowledge of the workings of a specific region, goods and services, major cities and population centers, how individual provinces interact or relate with other provinces in the region, etc. While you may know the titles and hierarchy of the governmental structure you don’t know about the individuals occupying the positions of authority that falls under Knowledge (Nobility and Royalty).
Special: 5 or more ranks in Knowledge (Regional) bestows a +2 bonus to both Knowledge (Local) if it is within the region and to Gather Information within the region.
Knowledge (Local)
This skill applies to a single specific province, such as the Imperial City, Ilien, Abbatuor or Brosien. Use of this skill provides information in greater detail than Knowledge (Regional) but only in relation to a single province. Specific layout of the towns and cities within the province, the best way to travel between towns and cities, etc., are the types of things that this skill is useful for.
Special: 5 or more ranks in Knowledge (Local) bestows a +2 bonus to Gather Information checks within the province in question.