I doubt it has 320000 vocabularies.

معني بعضي كلمات اصلا نيست. اگه اين طوري باشه ارزش $١٠ رو اصلا نداره. searched the word Rhetoric, there was no result for it. I believe that the developer of this app just put a random number (320000 words). How would you know if its true. The best example is my experience that I said earlier.

Mostafajamal2011 about Advanced English Persian Dict, v2.0