Wasps and hornets are closely related, but they have some differences. Hornets are generally larger and more aggressive than wasps. Wasps tend to have a slimmer body with a narrower waist, while hornets appear more robust. Both can sting, but hornet stings are more painful due to their venom. Have you encountered either of these insects recently, or are you curious about them for another reason? It's always good to know how to stay safe around them!