> ## Documentation Index
> Fetch the complete documentation index at: https://docs.tavchain.safeney.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Glossary

> Definitions of Tavchain account, transaction, token and node terminology, including chain IDs, gas, receipts and base units.

Use this glossary to interpret Tavchain's network, transaction and node documentation.

| Term | Meaning |
| - | - |
| EVM | The execution environment for Ethereum-compatible contract bytecode. |
| EVM chain ID | The numeric identity used by wallets when signing. Tavchain Testnet uses `771002`. |
| Native chain ID | The node identifier, `tavchaintestnet_771002-1`. |
| Tavcoin (TAV) | The native coin used for transaction value and fees. Test TAV has no monetary value. |
| atav | TAV's base denomination. `1 TAV = 10^18 atav`. |
| Gas | The unit that meters transaction execution work. |
| Nonce | An account's transaction sequence number. |
| Receipt | The execution result for an included transaction. |
| Validator | A node admitted to the consensus validator set. |
| Full node | A node that follows and verifies the chain without necessarily voting in consensus. |
| RPC | The interface used by wallets and applications to query state and submit transactions. |
| Explorer | A service that indexes chain data for browsing. Its index can lag the chain. |
| Faucet | A service that distributes valueless test tokens for development. |
| ERC-20 | A token contract interface; its balances are separate from native TAV. |

[Network information](https://docs.tavchain.safeney.com/tavchain/network.md) · [Transaction lifecycle](https://docs.tavchain.safeney.com/tavchain/learn/transactions.md) · [Node roles](https://docs.tavchain.safeney.com/tavchain/operate/node-roles.md)


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