Here's some information about the word bank that might be helpful; I believe it is accurate. First, each exercise has a "main" translation (the one that appears at the top of the discussion page) along with other acceptable translations. Second, the word bank contains the words that are in the MAIN translation, along with other "decoy" and incorrect words. Third, if you don't want to use the word bank, I believe you have the option to switch to using your keyboard for input instead, allowing you to write whatever you want. Finally, course teams do not have control over what words appear in the bank -- other than the ones that are in the "main" translation.