pelvis

sacroiliac joint : joint that combines the sacrum/ilium

anterior (superior/inferior) iliac spine : spine on the lateral sides

acetabulum : the place the femur head connects to hip bone

obturator foramen : the hole

inferior ramis of pubis : bottom circle of hole

superior ramis of pubis : top circle of hole

ischium : lateral side of circle of hole

crest of ilium : the top of pelvis