Explanation:

Increase in mass and size is growth

differentiation: meristem undergo maturation to perform specific functions

De differentiation: some of the living differentiated cells which have lost capacity to divide can regain the capacity of division under certain conditions

Re differentiation: De differentiated cells once again lost capacity to divide but mature to perform specific functions.

Growth

Growth is the change in physical structure due to cell division in living organisms

Differentiation

meristematic tissue ------> parenchyma tissue

undiffentiated cells----------> differentiated cells

same kind of cells ------------> different kind of cells

example : stem cells give rise to cardiac tissue