Spiders aren't insects

I'm grateful that someone pointed out my misconception: I had in mind that spiders are insects, but they are not. I learned that while they both have an exoskeleton on the outside of their bodies, they also differ in several ways. For example:

- insects have 6 legs, whereas spiders have 8
- insects have 3 body parts, whereas spiders have 2
- insects have 2 eyes, whereas spiders have 8
- insects often have 2 antennas, whereas spiders don't have any
- insects often have 2 wings, whereas spiders don't have any

Fascinating to think of these differences, so I'm happy to have learned something new!