Urban core is a commonly used term to describe the central area of a city. However, there are several synonyms that can be used to describe this part of the city. One such synonym is downtown, which refers to the commercial center of a city. Another synonym is city center or central business district (CBD), which emphasizes the economic importance of the area. Inner city is another synonym, which is often used to describe areas with high population density and lower-income demographics. Lastly, the term "metropolis" can be used as a synonym for urban core, emphasizing the size and importance of the central area in a larger metropolitan area.