From the Greek "polis" meaning "city"
* Politics: The activities associated with the governance of a country or other area, especially the debate or conflict among individuals or parties having or hoping to achieve power.
* Political: Relating to the government or public affairs of a state, country, or other area.
* Policy: A course or principle of action adopted or proposed by a government, party, business, or individual.
* Police: A civil force responsible for maintaining order and enforcing the law.
* Polite: Having or showing good manners. (This usage is less direct, as it comes from the French "polite" which means "polished" and likely references the polished manners of city dwellers.)
* Polity: A form or system of government.
* Metropolitan: Relating to a large city, especially the capital of a country or region.
* Cosmopolitan: Familiar with and at ease in many different cultures and societies.
Other words with the "poli-" root:
* Poliomyelitis: A serious viral disease that affects the central nervous system, causing paralysis.
* Polymer: A large molecule composed of many repeating subunits.
* Polyp: A small growth on a mucous membrane.
* Polygraph: A lie detector.
Let me know if you'd like more examples or explanation!