RNA and DNA are both nucleic acids, but they have some key differences:

1. Sugar:

* DNA: Contains deoxyribose sugar

* RNA: Contains ribose sugar

2. Bases:

* DNA: Contains adenine (A), guanine (G), cytosine (C), and thymine (T)

* RNA: Contains adenine (A), guanine (G), cytosine (C), and uracil (U)

3. Structure:

* DNA: Double-stranded helix

* RNA: Usually single-stranded, although it can fold into complex 3D structures

4. Function:

* DNA: Stores genetic information, acts as a blueprint for protein synthesis

* RNA: Involved in protein synthesis, acts as a messenger between DNA and ribosomes, plays a role in gene regulation

5. Stability:

* DNA: More stable than RNA, due to the presence of deoxyribose sugar

* RNA: Less stable than DNA, due to the presence of ribose sugar, which is more susceptible to hydrolysis

Here's a table summarizing the key differences:

| Feature | DNA | RNA |

|---|---|---|

| Sugar | Deoxyribose | Ribose |

| Bases | Adenine, Guanine, Cytosine, Thymine | Adenine, Guanine, Cytosine, Uracil |

| Structure | Double-stranded helix | Usually single-stranded |

| Function | Stores genetic information | Involved in protein synthesis |

| Stability | More stable | Less stable |

In essence, DNA is like the blueprint for life, while RNA is the construction crew that builds the proteins based on the blueprint.