Engineno9. You seem to have as good a grasp of the principles as most others. As for the differences between bonded, grounded and earthed, it seems to me that many people use these terms interchangeably and that there really isn't a huge difference between them.
"Bonded" seems the most straightforward to me and suggests that components are electrically joined together e.g. in a metal aircraft the flying control surfaces are bonded to the airframe by flexible conductive straps. This is the Faraday's Cage principle.
"Grounding" to my mind would suggest connecting electrical components to the chassis of an electrical apparatus, while "earthing" might be the electrical connection of something to the earth (or ground).
It's all a bit confusing! Perhaps a qualified electrical engineer should answer this.