Carbohydrates are sugars or starches and the sugar gives you energy and lipids are fats and you get most of your energy from this.
The right answer is Tophus.
A tophus (tophi in plural) is a subcutaneous deposit of uric acid crystals surrounded by inflammatory cells. They are most commonly found in ligaments and soft tissues around the joints, as well as on the ears or Achilles tendon. The tophus is a classic manifestation of the most advanced forms of gout.