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.
The femur is the only bone in the thigh. It is classed as a long bone, and is in fact the longest bone in the body. The main function of the femur is to transmit forces from the tibia to the hip joint.