What's the difference between facilitated diffusion and active transport?

I can see why you could get these two mixed up as both are movements of molecules which require a transport protein. There are, however, key differences between the two.Facilitated diffusion(FD) is a passive movement whilst active transport(AT) is an active movement. What this means is that in FD molecules move from an area of high concentration to low concentration, whereas, in Active Transport molecules move against their concentration gradient from an area of low to high concentration. As FD is a passive movement, ATP( the universal energy carrier) is not required, unlike in Active Transport where it is. Another key difference is that in FD, the transport protein needed can be either a carrier protein or a channel protein, whereas, in Active Transport only carrier proteins are involved.