BIP39 stands for Bitcoin Advancement Proposal 39. The words are selected from a particular list of 2048 common English words which may be utilized to the make a binary seed (your non-public key). You should be able to check if the last word with the seed within the movie earlier https://sites2000.com/story8465668/new-step-by-step-map-for-ledger-seed-phrase-bip39