It is always good to contact your insurance carrier to ask this question and get the final determination from them.
If you are operating your car and you hit something or someone hits you, that is considered a collision. If your car is sitting, even if you are not in it and someone hits it, that is still considered a collision by your insurance carrier. A comprehensive claim is damage to your vehicle that is sometimes considered an act of God. Hail storm, wind storm, flying debris, tornado, deer or animal collision, or your neighbor's tree limb landing on your car. These types of damage are usually considered comprehensive damage.