WordUp Knowledge Map - How to use 

WordUp has ranked all the words in the English language in order of how useful they are. You make the most out of your learning time, because you focus on what matters the most.
It first maps out where the gaps in your knowledge are, and creates a personalised learning plan that focuses on one word at a time, always ensuring that you are learning the most useful word first.
WordUp can become a part of your life, supporting you every day. Once you build a map of your knowledge gaps, you will start to fill them. It’s a journey that never ends. You’ll take charge of your vocabulary, as WordUp will guide you throughout your life, so you become smarter every day.