In both cases, there is a quantity that doesn't change over time in a closed system - the conserved quantity. Both laws of conservation can help you solve certain problems that might be quite tricky to solve through other means.
The law of conservation of energy states that all energy in the universe is conserved. It can not be created nor destroyed, but it can be interchanged between mechanical and non-mechanical energy.
The term 'conservation of momentum' means the principle that the total linear momentum in a closed system is constant and is not affected by processes occurring inside the system
in law of conservation of energy ENERGY IS CONSERVED and in law of conservation of momentum MOMENTUM IS CONSERVED. There's not similarity in these two laws. expect that in both laws , one quantity is...