masonw125
Iron is an element on the periodic table, but due to its definition, it has now taken on different meanings. Of course, it can be used scientifically, as it literally should be, but it is also used as an adjective. Due to the characteristics of iron - its toughness and strength - it can be used to describe various things; an 'iron heart', or an 'iron spirit'; it is now used to make something sound stronger and more courageous.