I've already gave my definition of functional strength. It's strength you use or can use everyday in the real world and isn't dependent on how much you can lift or move in the weight room but what you can do in the real world.
Free weight training gives you functional strength but sometimes being strong in the weight room doesn't mean shit in the real world.
Now I never said free weight training is non-functional, and if it came off that way I didn't mean for it too.