Difference between Crawdad and Crayfish

What is the difference between Crawdad and Crayfish?

Crawdad as a noun is (us regional) the crayfish. while Crayfish as a noun is a freshwater crustacean (cambaridae) resembling a small lobster, sometimes used as an inexpensive seafood or as fish bait.

We hope you now know whether to use Crawdad or Crayfish in your sentence.