A transaction ID (TXID) is a unique alphanumeric string used to identify each transaction on the blockchain.

A wallet is a tool used for sending and receiving cryptocurrencies. There are different types, including software wallets, hardware wallets, and paper wallets.

Web 1 denotes the early era of the web when data was primarily presented through read-only pages interconnected via hyperlinks. It's also known as the 'read-only' web.

Web 2 signifies the interactive web, enabling users to create, share, and engage with content in various forms. It characterizes the current iteration of the internet.

Web 3, often referred to as the decentralized web, represents the future of the internet. In Web 3, users will have greater control over their content and the extent of information they share when interacting with applications or platforms.

Wei is the smallest denomination of Ether (ETH), the currency on the Ethereum network. It's commonly used in discussions of gas prices.