1) giant set - 4 or more exercises performed without resting between them.
2) super-set - 2 exercises, usually opposing muscle groups such as biceps and triceps, performed without resting between them. A compound set is 2 exercises for the same muscle group performed without resting between them.
3) kcalorie (Calorie) - In science energy has a specific definition. Energy is the product of force times distance E = F x d. In order to talk about energy we need to have units. If we use the cgs system (centimeter-grams-second) force is measured in dynes, distance in cm, and energy in ergs. If we use the mks system (meter-gram-second) force is measured in newtons; distance in meters and energy in joules. A third unit comes from the amount of energy necessary to heat 1 g of water by 1 °C. This is called a calorie (or a g-calorie or small calorie) If we heat 1 kg (1000 g) by 1 °C we obtain a large Calorie (also called kilocalorie).
The kcalorie is the unit most of you are familiar with. It is used to measure the energy content of the food we eat. The food we eat is metabolized in our body to produce energy which we need to move our bodies. Most packaged groceries that you buy in the store have the amount of energy content or Calories printed on the box or can.