The Secret Recovery Phrase (also referred to as a seed phrase, mnemonic, or seed phrase) is a sequence of words generated by your cryptocurrency wallet that allows you to access your cryptocurrency. Consider a crypto wallet like a password manager, with the seed phrase like the master password. Having your seed phrase means you always have access to the crypto associated with the wallet that generated it - even if that wallet is deleted or lost.
Warning
DO NOT share your Secret Recovery Phrase with anyone!!! If someone has access to your secret phrase, they will have access to your wallet.