Urban primacy: Urban primacy refers to a situation where one city is disproportionately larger than other cities in terms of population and economic activity.
Megacity: A megacity is an extremely large metropolitan area with a population of over 10 million people.
Economic disparity: Economic disparity refers to the unequal distribution of wealth and resources among individuals or regions within a country. In the context of primate city distributions, it can contribute to the concentration of economic opportunities in the primate city while leaving other areas comparatively underdeveloped.