You're right! DNA and RNA differ in many ways, but there's one key similarity.

Here are the major differences:

* Sugar: DNA contains deoxyribose sugar, while RNA contains ribose sugar.

* Bases: DNA uses thymine (T), while RNA uses uracil (U) in place of thymine.

* Structure: DNA is typically double-stranded (forming a double helix), while RNA is typically single-stranded.

The similarity: Both DNA and RNA are nucleic acids made up of nucleotides.

Let me know if you'd like more details about any of these differences!