Public Key, Public Address, Account ID: we use those terms interchangeably on StellarX.
The Stellar network relies on Public Key cryptography, which means every account has a Public Key and a Secret/ Private Key. As the name suggests, your Public Key is public. It’s always safe to share, and it’s how other people identify your account and verify that you authorized a transaction.
Your Public Key is also where you’ll send funds when you deposit XLM into your StellarX wallet.
To find your Public Key, check the “Account Settings” drop-down menu and navigate to the 'Public Keys' section. From there, you can view or automatically copy your Public Key.
If you have any questions about this please reach out to support@stellarX.com and we will be happy to help!