The intercellular substance is also known as extracellular matrix. It is a complex network of molecules that surrounds and supports cells in tissues and organs. Other synonyms for intercellular substance include interstitial fluid, ground substance, and matrix. The term "stroma" is also used in some contexts, especially in reference to supportive tissue in glands or organs. The extracellular matrix is composed of various macromolecules like collagen, elastin, and proteoglycans. It provides mechanical support to cells and tissues, regulates cell behavior, and plays a crucial role in tissue development and repair. Understanding the different synonyms for intercellular substance is important in different fields of study, including biology, physiology, and medicine.