- `xkcd.txt`: the dictionary for [XKCD](https://xkcd.com/)'s [Simple Writer](https://xkcd.com/simplewriter/), [Up Goer Five](https://xkcd.com/1133/), and [Thing Explainer](https://blog.xkcd.com/2015/05/13/new-book-thing-explainer/), minus contractions.
- `google-10000.txt`: the top 10,000 most common English words from [Google's Trillion Word Corpus](https://books.google.com/ngrams/info), minus swear words.
- `gfycat.txt`: the adjectives and animal names that [gfycat](https://gfycat.com/) uses to generate URLs.
+- `bip39.txt`: the word list used to make [BIP39 mnemonic phrases](https://github.com/bitcoin/bips/blob/master/bip-0039.mediawiki) for generating Bitcoin wallets.
+- `echohash.txt`: the word list used for Gemini's [Echo Hash](https://echohash.net/) utility, which transforms a hash into an English phrase.
## Word list sources
- [XKCD Simple Writer Word List](https://xkcd.com/simplewriter/words.js)
- [first20hours/google-10000-english](https://github.com/first20hours/google-10000-english)
- [gfycat adjectives](http://assets.gfycat.com/adjectives) and [gfycat animals](http://assets.gfycat.com/animals)
+- [BIP39 English word list](https://github.com/bitcoin/bips/blob/master/bip-0039/english.txt)
+- [echohash](https://github.com/gemini/echohash/blob/master/src/wordlists/en_eff_long.js)