The term "cushion" refers to a soft, resilient material that is used for various purposes such as providing support or comfort. When something is described as being cushioned, it means that there is some kind of protective layer or padding present which helps to absorb shocks and reduce the impact of pressure or force.
In everyday language, "cushion" can also refer to a soft surface or support that provides protection from hard surfaces or falls. For example, a couch might have cushioned seats for added comfort while sitting. In sports, a player may use a cushioned mat to help reduce the impact of landing after a jump.
In summary, "cushion" refers to something that is soft and protective, designed to provide support or comfort, and absorb shocks or pressure.