Bip39 Words. The passphrase is just not chosen in the predefined list of 2048 words – it may be any word or phrase you choose. Any person else who discovers the phrase can steal the bitcoins. It have to be saved secret, as an example it must not be typed https://my-social-box.com/story4747549/bip39-words-https-linktr-ee-bip39-the-best-side-of-bip39