Iron, a material that has been used for since 2000BC, has been and still is a widely used material. Therefore there are occasions when people tend to make simple mistakes. For example, even when products that are made of aluminium and copper some people will still refer to it as iron, as they automatically associate anything made of metal as being iron.
Iron, that has been around for so long and so often relied upon, is seldom used in its raw state of pure iron. Generally, when talking about “iron” it tends to mean iron that has been alloyed with a small amount of carbon thus providing a “steel” and/or “cast iron”.