Urban region is a term that describes an area that is densely populated and developed. This term can be used interchangeably with several other synonyms that portray a similar meaning. One of the synonyms for urban region is metropolitan area, which describes a large, densely populated city and its surrounding suburbs. Another synonym is megalopolis, which refers to a large, continuous urban region that spans across several cities or states. Cityscape is also a synonym for urban region, which describes the physical and visual characteristics of a city. Lastly, urban conurbation is another synonym that depicts a continuous and densely populated urban region. These synonyms can be used interchangeably depending on the context and preference of the speaker or writer.