WORK is called energy.Calorie and Joule both are UNITS of energy.Joule is a derived unit of energy or amount of heat in the International SYSTEM of Units and Calorie is a unit of energy.1 Calorie = 4.184 Joules, which is approximately EQUAL to 4.2 Joules.Other IMPORTANT units:QuantityUnitPowerWatt (J/s)TemperatureKelvin (K)luminous IntensityCandela (cd)Electric Current Ampere (A)