It&#x27;s actually a pretty consistent view.  You can use Gecko through a reskinned FF clone like Palemoon or Iceweasel, but can&#x27;t call it Firefox.  Firefox is the UI chrome and corresponding stack.  Gecko is the engine.<p>Some would say they&#x27;re part and parcel, but it&#x27;s clear now that Mozilla doesn&#x27;t agree.