The term "Big City" is a common expression used to describe a large metropolis or urban center, typically characterized by high population density and diverse cultural, economic, and entertainment opportunities. The exact definition of what constitutes as a big city can vary depending on the location and context, but generally speaking it refers to cities with populations over 100,000 people that are major hubs for business, finance, arts, culture, and industry. In essence, "Big City" is used interchangeably with terms such as metropolis or urban center to describe a bustling city full of life, energy, and endless possibilities.