A city is a large settlement that has advanced sanitation, utility, housing, and transportation systems. It is a central trading place that allows its inhabitants to live close to establishments that offer trade, education, certain amenities, and other interaction.
Life in the city is very fast-paced. You see tall buildings instead of trees and because cities are overcrowded with people and vehicles, it is a polluted place. Everything in the city is expensive; housing, food, utilities, and education.