An 18-word mnemonic phrase will increase protection by including additional words for the sequence. Right here’s an instance: Standard recovery phrases use a certain list of 2048 words subsequent the BIP39 standard (Bitcoin Improvement Proposal 39). You may verify In the event your words are Portion of the BIP39 list https://free-bookmarking.com/story18897997/helping-the-others-realize-the-advantages-of-bip39-mnemonic-phrase-tool