PIN - is the code that allows you to enter the app on your cellphone.
RECOVERY PHRASE/KEY - this is a combination of 24 words that you should keep in a safe place. It's your private key. Please don't share it!! It gives direct access to your money.
If you lose your cellphone, you need this key to recover your account! Unfortunately, you cannot recover your money if you lose this password!
ACCOUNT ADDRESS - this is a public key you can share to receive money or be added as a beneficiary. This address you can use to send money too.