backupin Key Pairs page.
Private keyto back up. Both mnemonics and private key can help you to import your Keypair.
Private Key. Whether you use a mnemonic or a private key can import your Keypair, you can switch by clicking the mnemonic or clicking the private key. (Do not enter the private key into the mnemonic or the mnemonic into the private key, this will not help you to retrieve the keypair).