"Downtown" is a term commonly used to describe the central business district of a city or urban area. However, there are several other synonyms that can be used to describe this area. The most common alternatives include "city center," "central business district," "CBD," and "city core." Other synonyms that can be used include "metropolis," "downtown area," "central area," and "urban core." These terms all refer to the central hub of a city where various business, governmental, and cultural institutions are located. Whether you call it "downtown," "city center," or "CBD," the meaning remains the same - it is the heart of the city.