Urbanisation - People moving from elsewhere to the city
Degree of urbanisation - The percentage of people in a country living in a city
Urbanisation rate - The growth of the degree of urbanisation
Settlement surplus - The positive difference between people moving to and leaving an area
Urban network - A group of cities that is heavily linked to each other within a country
Primate city - A city that is way bigger and more important than the second largest city in a country