Denuded means excoriated/eroded. Type "denuded skin" into google images and you'll find lots of examples.
Granulating tissue (Google "granulation tissue") is healthy, beefy red tissue in a wound. It's a good sign that the wound is healing.
Clean, non-granualting tissue is also just as it sounds. There are no signs of infection or growth of bad tissue (slough, eschar) so it's clean, but it's also not growing granulation tissue, so it's not actively healing.
Sounds like a basic wound care textbook might be of some use to you. I found "Wound Care Made Incredibly Easy" a very easy, informative read and also a great resource for all varieties of wound care.