A host is like the person who throws a party. Imagine you are having a birthday party, and you invite all your friends to your house. You make sure they have snacks, games, and a place to sit. You are the host because you are taking care of everyone and making sure they have a good time.
Another way to think about a host is like a tree that gives a home to birds. The tree is strong and provides branches for the birds to build their nests. The tree doesn’t fly with the birds, but it helps them by being a safe place to live. The tree is the host because it supports the birds.
A host can also be like a big ship that carries people across the ocean. The ship holds everyone safely inside while it moves through the water. Without the ship, the people couldn’t travel so far. The ship is the host because it carries and protects the passengers on their journey.