High density lipoprotein cholesterol (HDL-C) is commonly known as the "good" cholesterol. It plays an important role in transporting excess cholesterol from the body's tissues to the liver, where it can be broken down and eliminated. This is why HDL-C is associated with a lower risk of heart disease. Synonyms for HDL-C include "high-density lipoprotein," "good cholesterol," "healthy cholesterol," and "protective cholesterol." Other commonly used terms for HDL-C include "high-density lipoprotein particle" and "high density lipoprotein cholesterol fraction." Regardless of which term is used, maintaining adequate HDL-C levels is an important part of maintaining overall cardiovascular health.