Compilation issues are errors in converting a smart contract's source code into an executable form. Because of them a crypto exchange may reject a token when a listing application is submitted if the code fails verification.

A stale block is a block or unit of a miner's work that has lost relevance because the network or pool has already accepted another result. Such work brings no reward.

A public key is the open part of a cryptographic key pair that can be freely shared. A receiving address for cryptocurrency is formed on its basis.

A mining pool is an association of miners who jointly search for a new block and split the reward in proportion to the power they contribute. This increases the chances of a stable income.

A dust transaction is a transfer of an extremely small amount of cryptocurrency, almost devoid of financial value. Such tiny amounts clutter the blockchain and can be used for deanonymization.