Answer:
They differ in how the government is run.
Step-by-step explanation:
Democracy: The government is ruled by the people who elected the representatives to help the country (or state). The government cannot rule OVER the people, but FOR the people.
Monarchy: Either a king, a queen or both that rule over the people until death or abdication. The people do not have a say or a choice in who the leader will be or other government related issues. The monarch rules OVER the people.