How is the law of convervation of energy and the law of convervation of energy and the law of mass similar?

The law of conservation of energy states that energy cannot be created or destroyed, only transferred or transformed. The law of conservation of mass states that mass cannot be created or destroyed, only rearranged or transformed. Both laws indicate that there is a constant amount of energy and mass within a closed system, with changes occurring through transformation or transfer rather than creation or destruction.