A heel is the bottom, back part of a shoe or boot that provides elevation. The styling and construction of a heel may vary (i.e., stacked, stilletto, spiked, sculptured, kitten).
About Nubuck Shoes:
Nubuck Shoes are made from a type of grain leather that has been slightly brushed on the surface to create a very fine velvet-like appearance. The texture of Nubuck Shoes is finer than suede.