Democracy is a form of government where the people have the power to vote and make decisions.
For example, in a democratic country, the citizens can vote for their leaders, such as the president or prime minister. They can also sometimes vote for laws and policies in a referendum [public vote on a specific matter].
Very Simple Definition:
Democracy is when people have the power to choose their leaders and make decisions together.
For example, in a democracy, people can vote for who they want to be the leader of their country. They can also vote on rules and laws that are very important.