The following are the different types of cities and their characteristics. Note: Poor defenses and weak defenses are different. Poor defenses are worse than weak defenses.

Capital Cities: Large and wealthy with strong defenses.
Colonies: Large and poor with weak defenses.
Outposts: Small and poor with poor defenses.
Port Cities: Large and wealthy city with weak defenses.
Strongholds: Small and poor with strong defenses.
Towns: Large and poor with strong defenses.
Trading Posts: Small and wealthy with strong defenses.
Villages: Small and wealthy with poor defenses.