That's mainly because all hornets are a subset of wasps. They are related, although hornets are larger and often nastier.

Though they are usually less aggressive, unless provoked or their nest is threatened, the venom in their sting ... hornet species in the US are the European hornet (Vespa crabro) and the bald ...

Able to sting multiple times, warrior wasps inject venom that can cause prolonged discomfort, making them one of the most feared stinging insects. Despite their name, bald-faced hornets are actually a ...