Key differentiation right here because manufacturers don't keep consistency in their terminology. Rigid's flood is actually narrower than their driving lights, for example.
@Surfscottydog
IMO spots are secondary. A good combo driving/spot pattern on the bumper is the way to go if you're only doing two lights or straight driving lights are fine as well. Pure spots are for seeing obstacles at a distance and putting them on your bumper both reduces effective range and tends to wash out terrain more than a good driving light. So if I were to start I'd do (did) something like a pair of Baja Designs LP6 combo on the bumper and plan for a spot bar on the roof in the future if you feel you need more light. If you need something more affordable, KC makes great lights too and while not as bright as BD or Rigid, their LED driving lights are excellent. They make an SAE pattern as well which is road legal as a high-beam light.
Edit just to add... one light is not equivalent to another and you may find that by buying the good stuff to start, you need less later on. I had some grand plans for my lighting setup with a 30" spot bar on the roof and additional driving lights and after installing the two LP6 lights, I found I really don't need much more except some ditch lights facing about 45 degrees out and the peripheral lights on my roof rack. They have a low beam setting as well which disables the spot and is great for illumination while following.