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.
Thigh bone: The thigh bone in anatomy is called the femur.. Whichever term you care to use -- thigh bone or femur, it is the bone in the leg that extends from the hip to the knee.