### **4. Case Study: Bitcoin vs. Ethereum Discussions**  
| Aspect          | Bitcoin Posts                                                                 | Ethereum Posts                          |  
|-----------------|-------------------------------------------------------------------------------|-----------------------------------------|  
| **Focus**       | Store of value, scarcity, macro trends                                       | DeFi, smart contracts, upgrades (e.g., Dencun) |  
| **Tone**        | More polarized (e.g., "digital gold" vs. "environmental disaster")           | Technical/developer-centric             |  
| **Top Keywords**| *HODL, ETF, halving, Satoshi*                                                | *gas fees, staking, Vitalik, Merge*     |