Serenity is the quality or state of being serene, which translates into a placid and untroubled feeling of calmness, tranquility and peace of mind. Serenity usually relates to composure, patience and relaxation.

Energy is the strength and vitality required for sustained physical or mental activity, as it provides the capacity or power to properly function and perform an action, such as move of an object or engage in a conversación.