Adipose tissue is a type of body tissue that is composed of fat cells. There are two main types of adipose tissue: white adipose tissue and brown adipose tissue.

White adipose tissue is the most common type of adipose tissue in humans. It is composed of large, round fat cells that store energy in the form of triglycerides. White adipose tissue is found in many places in the body, including beneath the skin, around organs, and in the abdominal cavity.

Brown adipose tissue is much less common than white adipose tissue. It is composed of smaller, more irregular fat cells that contain more mitochondria than white adipose cells. Brown adipose tissue is found in newborn babies and in hibernating animals. It helps to generate heat and keep the body warm.

The main difference between white adipose tissue and brown adipose tissue is their different functions. White adipose tissue stores energy, while brown adipose tissue generates heat.