> For the complete documentation index, see [llms.txt](https://coinplus.gitbook.io/help-center/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://coinplus.gitbook.io/help-center/vocabulary.md).

# Vocabulary

- [Wallet address](https://coinplus.gitbook.io/help-center/vocabulary/wallet-address.md): In this article, you will learn what is private key and why do you need it.
- [Private key](https://coinplus.gitbook.io/help-center/vocabulary/private-key.md): In this article, you will learn what is private key and why do you need it.