Use this domain for the proper names of cities, towns, and villages in the language area. Include the names of important cities outside of the language area if your language has a special name for the city or a different pronunciation for it. It might be good to use a map for this. In fact it is good to include a map of the language area in a published dictionary. If your language area is very large, there may be hundreds or thousands of cities, towns, and villages. In this case you will have to decide which should be included in the dictionary. Or you could decided to list them in a special section.