An antacid is a substance which neutralizes stomach acidity, which in turn relieves heartburn.n antacid is a substance which neutralizes stomach acidity, which in turn relieves heartburn.
Hip is the region below the waist and above the thigh. It includes the buttocks (which only refers to the back muscle). It includes the flesh and internal anatomy of this area especially the bones, hence you have hip joints.
Normal Hip Joint vs. Arthritic Hip Joint (image courtesy of: Stryker Orthopaedics). The femur is the upper leg bone or thigh. It is the largest bone in the body. At the top of the femur is a rounded protrusion which articulates with the pelvis.