society > occupation and work > materials > derived or manufactured material > metal > iron > [noun] > type of iron (93)
As a count noun: a variety or sort of this metal.
Subcategories:
— bar-iron (10)
— sheet iron (6)
— wrought iron (4)
— cast iron (29)
— iron used for making steel (4)
— iron for making boilers (2)
— scrap iron (6)
— other forms of iron (8)
— other types of iron (23)