According to the cell theory all living things are made up of basic units called cells. Why is this considered to be a theory and not a law?

Cell theory is considered a theory rather than a law because it explains a broad set of observations about the structure and function of living organisms, providing a framework for understanding biological processes. Unlike laws, which describe consistent and universal relationships or patterns in nature (such as the laws of physics), theories allow for interpretation and adaptation as new evidence emerges. Cell theory has been supported by extensive research and experimentation, but it remains open to refinement and expansion with ongoing scientific discoveries.