* Lipids are made up of fatty acids and glycerol. Fatty acids are long chains of hydrocarbons, while glycerol is a three-carbon alcohol.

* Amino acids are the building blocks of proteins.

Here's a breakdown:

* Proteins: Made of chains of amino acids linked together by peptide bonds.

* Lipids: Made of fatty acids and glycerol, often with other molecules attached.

So, while both lipids and proteins are important biomolecules, they are composed of very different building blocks.