A guard is like a superhero who stands at a gate to make sure only the right people get in. Imagine if your house had a big gate and you wanted to make sure only your friends could come to play. A guard would be there to say ‘Hello!’ to everyone who comes by and check if they are on your list of friends. If they are, the guard lets them in; if not, the guard kindly asks them to leave.
Think of a guard as a big, strong umbrella that keeps you dry when it rains. The guard is there to protect you from the rain, making sure you stay warm and cozy. Just like the umbrella keeps the rain away, a guard keeps anything bad from coming near you.
A guard is also like a watchful dog who sits by the door. This dog listens carefully and looks around to ensure everything is safe. If something seems strange, the dog barks to let you know. In the same way, a guard pays attention to everything around them to keep you safe and sound.