People often use the terms “corrosion” and “rust” interchangeably, perhaps due to the common association of rust with the corrosion of metals. This interchangeable usage might stem from the fact that rust is one of the most visible and recognizable forms of corrosion, especially when it comes to iron and steel.
Since rust is a well-known consequence of the corrosion process in iron and its alloys, individuals may use the term “rust” to describe the general corrosion of metals, even those not composed of iron. This colloquial usage can sometimes lead to confusion, as corrosion is a broader term that encompasses various chemical processes causing the degradation of materials beyond just the formation of iron oxide.