A convention is like a party where people who are interested in the same thing get together to talk, share ideas, and have fun. It's a big, special meeting where everyone is excited to be there and learn from each other. There are usually lots of different activities and events going on, like speeches, workshops, and games. People come from all over to attend the convention and make new friends with others who share their interests. Think of it like a big play date but for grown-ups!