Okay kiddo, so you know how we have rules and laws to keep us safe and treat each other fairly? Well, sometimes people break those rules and do things that hurt other people or the community. When someone breaks a law and does something bad, that's called a crime.
Now, when someone is accused of committing a crime, like stealing or hurting someone else, they go to court. The people in the court need to figure out whether or not the accused person is guilty, which means they actually did what they are accused of doing.
If the court finds someone guilty, that means they are responsible for what they did and will be punished for it. But it's important that the person is actually guilty before they are punished, because innocent people should not be punished.
The court system is set up to make sure that only guilty people are punished. They look at all the evidence, which is like all the clues and information that might help them figure out what really happened. They also listen to what the accused person and the people who saw what happened have to say.
So, when we say someone is guilty, it means that the courts have looked at all the evidence and decided that the person really did do something wrong and should be punished for it. It's important that we only punish guilty people so that everyone is treated fairly and no one is punished for something they didn't do.