Vascular ray is a term used to describe a type of plant cell responsible for transporting water and minerals within the plant. There are several synonyms for vascular ray, including medullary ray, wood ray, and pith ray. Medullary ray is a term that is often used to describe the same cells that constitute the vascular ray. Wood ray is a less common term that refers specifically to the cells located in the wood of a tree. Pith ray is another synonym that describes the cells located in the center of the stem of a plant. These terms are important for understanding the structure and function of plants and can help in describing different aspects of plant anatomy.