# Glossary of Terms

## Quaiscan Glossary

* **Address**: A unique identifier for a wallet or smart contract on the blockchain.
* **Block**: A group of transactions that have been verified and added to the blockchain.
* **Block Height**: The number of blocks in the chain between any given block and the first block in the same given shard.
* **Contract**: Also known as a smart contract, it's a self-executing program stored on the blockchain.
* **Gas**: The unit of measure for the computational work required to execute transactions or smart contracts on Quai Network.
* **Gas Price**: The amount of Quai or Qi tokens you're willing to pay per unit of gas for a transaction.
* **Hash**: A unique fixed-length string of characters that represents data. In blockchain, it's used to identify blocks, transactions, addresses, and more.
* **Miner**: Entities that verify and add new transactions to the blockchain.
* **Nonce**: A number used once, typically to verify the uniqueness of transactions.
* **Pending Transaction**: A transaction that has been broadcast to the network but not yet included in a block.
* **Token**: A type of cryptocurrency that represents a tradable asset or utility and is often built on top of an existing blockchain.
* **Transaction**: The transfer of cryptocurrency or data between addresses on the blockchain.
* **Transaction Fee**: The cost to process a transaction on the blockchain, typically paid to miners.
* **Wallet**: A tool that allows users to store, send, and receive cryptocurrency.


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