The term 'Parts of Hips' can refer to the two bones that make up the hip joint, the ilium and the ischium. The ilium is the uppermost and largest bone of the pelvis, and it forms the prominence of the hip. The ischium is the lowermost and strongest bone of the pelvis, and it forms the posterior part of the hip. Together, these two bones form the hip joint, which is a ball-and-socket joint that allows for movement in multiple directions.