Ethereum is a decentralized network that runs smart contracts, which are programs that execute automatically when conditions are met.
While Bitcoin focuses on being money, Ethereum is a general-purpose platform. Most DeFi apps, NFTs and tokens are built on Ethereum.
Ether (ETH) is Ethereum's native currency. Gas is the fee you pay to run transactions and smart contracts on the network.
Ethereum moved to proof of stake, so holders can stake ETH to help secure the network and earn rewards.
Ethereum is the foundation of decentralized finance and much of the Web3 economy, making it the second-largest cryptocurrency.
Ethereum is the world's leading smart-contract platform and the backbone of most decentralized applications.