Fe with different charges
Iron exists in the +2 oxidation state (iron(II)), also called ferrous iron, as well as the +3 oxidation state (iron(III)), also called ferric iron.  There are sever other oxidation states of iron that are not pertinent to your reactions.


  In your first reaction, the strongly oxidizing $\ce{Cl}$2
  oxidizes the neutral, metallic iron to it's highest stable oxidation
  state, iron(III).
  
  In your second reaction, $\ce{HCl}$ oxidizes iron to the lower stable
  oxidation state, iron(II).