# Glossary

This page lists all of the terms and their definitions that are used in these docs. Consider these as the building blocks of the Tokenbound Accounts system.

**TBA**

Short for Tokenbound Account. This is the account associated with a particular NFT. An NFT on a particular chain is uniquely identified as a contract address and tokenId pair. For example, one ERC721 contract can have multiple unique token IDs associated with it, and each tokenId will have a unique account associated with it. A TBA isn't generated, it's calculated. The address is deterministic and is calculated based on the NFT contract, the ID of the token and the [Account](https://github.com/Starknet-Africa-Edu/TBA/blob/main/src/account/account.cairo) implementation

**Registry Contract**

The presence of a [registry contract](https://github.com/Starknet-Africa-Edu/TBA/blob/main/src/registry/registry.cairo) on a particular chain makes it possible for that chain to support TBAs. This contract holds the method to calculate the address of a given NFT (contract, tokenID pair)

**Account**

Implementation of the [Tokenbound Account](https://github.com/horuslabsio/TBA/blob/main/src/accountV3/accountV3.cairo). 

**TBA Explorer**

We built the [tokenbound explorer](https://www.tbaexplorer.com/) to provide a way for anyone to view the wallet associated with any NFT.