What is the difference between Compensation and collision?

I think you mean Comprehensive and Collision. This is a general description; your policy or your insurance agent will be able to provide exact definitions of what is and isn't covered. Collision coverage means exactly what it says. It covers the cost to repair or replace your vehicle when it is involved in a crash: colliding with another vehicle, hitting a stationary object, etc. Comprehensive covers most of the remaining ways your vehicle can get damaged: A tree falling on your car, hail damage, flood damage, vandalism, etc.