In brief:
1. **Objective**
- 🧱 **Bitcoin**: Digital currency (Payment/Value storage).
- ⚡️ **Ethereum**: Smart contracts platform and decentralized applications.
2. **Function**
- Bitcoin: Money transfer only.
- Ethereum: Programming applications (such as **DeFi**, **NFT**).
3. **Speed**
- Bitcoin: 10 minutes for transactions.
- Ethereum: 15 seconds.
4. **Mining/Verification**
- Bitcoin: **Proof of Work** (Expensive mining).
- Ethereum: **Proof of Stake** (Lower energy consumption).
5. **Flexibility**
- #بيتكوين $BTC : Limited programming.
- #إيثيريوم $BTC : Scalable (**dApps**).
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**Absolute summary**:
Bitcoin = Digital gold 💰, Ethereum = Operating system for smart applications 🌐.