What is another term for 'frontier'?

The term 'frontier' is often associated with areas that lie at the edge of settled or developed land, typically representing a zone of transition between different cultures, economies, or geographical characteristics. 'March' or 'marchland' is historically used to describe a border region or boundary area, particularly one that serves as a transitional zone often with distinct legal or cultural implications. This terminology stems from the medieval period, where 'marches' referred to territories that were often contested or served as buffer zones between different regions or powers.

In contrast, while terms like 'boundary,' 'borderland,' and 'periphery' might describe aspects of divisions or less developed areas, they do not carry the same historical connotation of a frontier as 'march' does. These other terms may refer more to static divisions or less defined regions rather than the dynamic, often contested spaces that characterize a 'frontier.' Therefore, 'march/marchland' is the most fitting term that encapsulates the concept of a frontier within geographical and historical contexts.