Common Words:
* Democracy: Rule by the people.
* Demographic: Relating to the structure of a population.
* Epidemic: A disease that spreads rapidly among a large number of people.
* Pandemic: A disease that spreads worldwide.
* Endemic: Native or restricted to a particular area.
* Demagogue: A political leader who appeals to popular prejudices and emotions rather than reason.
Less Common Words:
* Demography: The study of population statistics.
* Demotic: The popular or common form of a language.
* Demonym: A name for the people of a particular place. (e.g., "Athenian" is the demonym for someone from Athens).
* Dēmos: The common people in ancient Greece.
* Demigod: A being that is partly divine and partly human.
Other Words with "dem":
* Demonstrate: To show clearly by example or proof.
* Demolish: To destroy completely.
* Demure: Modest and reserved in manner.
It's important to note that "dem" can also be part of a compound word, like "demodulation" or "demilitarization," where its meaning is combined with the other part of the word.