Lexiverse calls each language a word planet. Each one has its own words, definitions, proverbs and idioms, written for that language.
The language you play
Game language chooses the word planet. Change it from the language chip on the home screen, or in Settings: Choose your word planet.
Your language
Your language is the one you know best: Translations are shown in this language. After each answer, the word appears with its translation. When Your language and the Game language differ, two more games appear: Translation and Comprehension.
The app in your language
The menus and buttons are translated into many more languages than the six word planets: App language, in Settings, sets them apart.