A node is a computer with an installed client connected to a cryptocurrency network. Nodes exchange data, relay transactions and blocks and jointly maintain the operation of the decentralized network.

A nonce is a variable number that miners substitute when hashing a block. By going through nonce values, they search for a hash that satisfies the target set by the network's difficulty.

A transaction fee is the payment the sender of a transfer pays the network for processing and confirming the operation. Its amount depends on the network load and the priority of the transfer.

A crypto evangelist is a person who works on educating people and popularizing blockchain and cryptocurrencies, explaining their principles to a wide audience.

A cryptocurrency faucet is a website or service that gives out small portions of coins in exchange for completing simple tasks or for user activity.