Cranial sutures are the bony joints that connect the bones of the skull. These sutures are essential for the proper growth and development of the skull, and they play a crucial role in protecting the brain. The term "cranial suture" is often used interchangeably with "skull suture" or "sagittal suture," but there are several synonyms for this term as well. Some of the most common synonyms for cranial suture include cranial seam, skull seam, headjoint, and skull joint. Additionally, healthcare professionals may use technical terms such as sutura cranii or sutura sutura frontalis. No matter what term is used, the cranial suture remains a vital component of the head and brain's overall health and function.