Downforce refers to a force that is exerted on an object or vehicle in motion, pushing it downwards. In automotive and aerodynamics contexts, it specifically describes the vertical component of the aerodynamic forces acting upon a car as it moves through air. This can be generated by various means such as spoilers, wings, diffusers, etc., which are designed to create lift and reduce drag while increasing grip on the road surface. The purpose of downforce is to improve handling, stability, and cornering speed in high-performance vehicles, particularly those used in motorsports like Formula One racing cars.