When comparing car insurance quotes, it helps to compare apples to apples; in other words, you want to be sure that the quotes you get are for identical - or at least very similar - auto insurance policies. Once you have a better idea of the type of coverage you’re looking for in a policy, this will be easy. To better understand coverage types start here
Insurance terms, definitions and explanations are intended for informational purposes only and do not in any way replace or modify the definitions and information contained in individual insurance contracts, policies or declaration pages, which are controlling. Such terms and availability may vary by state and exclusions may apply. Discounts may not be applied to all policy coverages.
Comprehensive car insurance covers damages from an "act of God," or events that are not caused by a car driving into something else. An "act of God" can include things like damage from a heavy tree branch falling on your car. Since you have no control over when or why a tree branch would fall on your car, this kind of accident would be covered under your comprehensive policy.