Differenciate between scral and coccyx

The sacrum is a large, triangular bone formed by the fusion of five sacral vertebrae. It is situated between the two innominate bones, forming the posterior part of the pelvis. The sacrum articulates superiorly with the last lumbar vertebra and inferiorly with the coccyx. It plays a crucial role in weight transmission from the upper body to the lower limbs.

The coccyx, commonly known as the tailbone, is a small, triangular bone formed by the fusion of typically four coccygeal vertebrae. It is located at the very end of the vertebral column, inferior to the sacrum. The coccyx serves as an attachment point for certain muscles and ligaments.