Rust away is a term that denotes the natural process of corrosion, in which a metal surface is gradually eaten away by oxidation. Some of the common synonyms for rust away include corrode, erode, deteriorate, decay, decompose, and disintegrate. These words are used to describe the gradual breakdown of metal surfaces due to a variety of environmental factors such as exposure to moisture, air, and chemicals. Rusting can cause serious damage to metal objects and structures, leading to structural instability, weakening, and eventual collapse. Therefore, it is important to take preventive measures such as applying protective coatings and regularly maintaining metal surfaces to ensure their longevity and prevent rusting.