Wallet vs accounts

What is the difference between the private key of an account and the seed phrase of its associate wallet?

Also, the BAT payment goes to a wallet, but to which of its account?

I don’t understand the concept of an account associated with a wallet.

Another thing, say I have a few accounts. How can I delete a particular account?

Private keys allow you to send or spend some of your Bitcoin , Ethereum, or other crypto — they’re algorithmically derived from the long string of numbers represented by your seed phrase. Your seed phrase gives you access to your wallet and all the private keys in the wallet.