the difference between the two is simple diffusion moves molecules downwards instead of upwards and infacilitated diffusion is the opposit, simple diffusions also can be passive (no clue if that makes sesnse) but facilitated diffusion is a more active process requiring energy you could technically look this up for the answer and find the same thing just more explained.
the media says:
"In simple diffusion, molecules move down the concentration gradient but molecules move up the concentration gradient. Simple diffusionis passive but facilitated diffusion is an active process that uses energy."
all u have to do is look up "Simple diffusion and Facilitated diffusion" and right at the top itll give u an answer