I'd echo Oggers there. Sometimes something explained in a different way can make something click if the textbooks aren't working. I enjoy reading these threads too it tests my own understanding at the same time.
From what I recall with icing the size of the droplets is the main difference, small water droplets freeze instantly on impact with the leading edge forming rime ice, whereas larger droplets impact then run back over the wing surface before freezing there as clear ice.