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 Walking Shoes:
Walking Shoes are supportive shoes, that may be Sneakers or Casual Shoes, used for short or long distance walking. Walking Shoes often are distinguished additional technology in their construction to support the physical activity.