Muzzle - I think this is where one of the biggest differences is apparent. The Maine Coon has a "a squareness to the muzzle"..."visibly square". While the NFC breed standard says, "part of the straight line extending toward the base of ear without pronounced whisker pads and without pinch.." - no mention of "squareness". The Maine Coon muzzle can and should be noticeably square and the NFC muzzle is quite tapered and relatively pointed, I think.
