Therm
The therm is a unit of heat energy used in the United States and the United Kingdom for measuring natural gas consumption.
Calories (Kilogram,thermoc.)
The kilogram calorie (also known as the large calorie, food calorie, or kilocalorie) is the energy to raise the temperature of one kilogram of water by one degree Celsius at a pressure of one atmosphere. This unit is widely used in nutrition to quantify the energy content of foods.