When discussing the layout of a city or town, the term "hierarchy of streets" is often used to refer to the different categories of roads based on their function and importance. However, there are several other phrases that can be used to describe this same concept, such as street classification, street order, street ranking, road hierarchy, or street grading. Whatever term is used, the idea is to create a clear and organized system that allows for efficient traffic flow and easy navigation for drivers, pedestrians, and cyclists alike. Understanding the hierarchy of streets is an essential part of urban planning and design.