Hitting a pole is a Collision claim. Comprehensive (also known as: Comp, Other Than Collission) is things such as: glass, fire, theft, vandalism, animals (deer, dogs, etc), hail storms, or other non-collision damages.
For more information you can go to InsuranceEasy.org at the bottom of their website there is a link for department of insurance for each state. By clicking on your states department of insurance you will be able to find consumer publications that explain coverages, etc.
Hope this helps!
