An 18-word mnemonic phrase improves protection by adding additional words to the sequence. In this article’s an illustration: Standard recovery phrases use a specific list of 2048 words adhering to the BIP39 standard (Bitcoin Enhancement Proposal 39). You may confirm When your words are part of the BIP39 list using https://bookmarktiger.com/story18768912/new-step-by-step-map-for-bip39-english-words