Traditionally, irons were made of iron. They were heated by a fire and then applied to clothes. Today, irons are usually made of other metals.
You have to smelt it to get the iron out. Other wise, you can't get iron form iron ore.
You would find a 2,3 and 4 iron are classed as long irons, 5,6 and 7 mid irons, 8,9 and wedge short irons.
A reducing agent like Hydrogen(H2), Carbon(C), Carbon monoxide(CO) or Ammonia(NH3)
Yes both contain iron. Whilst 'hard iron' is elemental iron, the iron in your blood is in the form of haemoglobin. This is a complex molecule which includes iron.