Here's a breakdown:

* Nucleotides are the building blocks of nucleic acids like DNA and RNA. They consist of three main parts:

* A nitrogenous base: Adenine (A), Guanine (G), Cytosine (C), Thymine (T) in DNA, or Uracil (U) in RNA.

* A five-carbon sugar: Deoxyribose in DNA or Ribose in RNA.

* A phosphate group: This is the acidic part of the nucleotide.

* Lipids are fats, oils, and waxes. They are very different in structure and function from nucleotides.

Let me know if you have any other questions!