An output is the part of a Bitcoin transaction that sets the recipient's address and the transfer amount. A single transaction can have several outputs at once: for different recipients and to return change to the sender.

A block reward is the payment a miner receives for a successfully created block of transactions added to the blockchain. It consists of new coins and transaction fees.

Gas is a unit measuring the computing resources needed to perform operations in the Ethereum network. The more complex a transaction, the more gas it consumes and the higher the resulting fee for processing it.

The genesis block is the very first block in a blockchain, from which the network's history begins. It lays the foundation for all subsequent blocks and effectively marks the birth of a cryptocurrency.

Gigahashes/sec (Gigahashes/sec, GH/s) is a unit measuring the computing power of mining hardware. It shows how many billions of hash operations a device performs in one second.