Final answer:
Growth refers to increasing body size by increasing the number of cells and the size of existing cells, while development involves the specialization of cells and various changes in the body.
Step-by-step explanation:
Growth refers to the increase in body size by increasing the number of existing cells, increasing the amount of non-cellular material around cells, and within certain limits increasing the size of existing cells. Development, on the other hand, involves the process of differentiation, where unspecialized cells become specialized in structure and function to perform specific tasks in the body. Growth and development both involve cell differentiation, but growth mainly focuses on the increase in cell size while development encompasses a broader range of changes the body goes through.