They are creepy and they are crawly. They bug you but they are not bugs. Bugs, or insects, are different than spiders. Insects have antennae, three body parts and six legs. Spiders have no antennae, only two body parts and eight legs.
Spiders also have extra tools called spinnerets.
These three small fingerlike gadgets are where the spider spins silk. The silk is produced in as many as five glands as a liquid protein that passes out the end of the abdomen through the spinnerets and turns into a solid immediately upon contact with the air. The spider's silk thread is made up of hundreds of smaller threads that stick together as they leave the spinnerets. Even though all spiders make silk, they don't all use it for making webs. Some young spiders use silk to help them travel on the wind.