What are the similarities between lipids and carbohydrates?

There are several similarities between lipids and carbohydrates. 

Lipids and carbohydrates are both essential organic compounds found in animals as well as plants. They both contain basic building blocks of carbon, hydrogen, and oxygen.

Both, lipids and carbohydrates, offer important nutrients in our diet and both undergo various changes on being taken into the body. Lipids and carbohydrates are essential for the proper functioning of the body and both contribute to chronic diseases when consumed in excess.