Here are few of the many important terms used in essay's: analyse, assess, clarify, compare consider, justify, outline, conclude, clarify, and many many more commonly used terms. It is important to understand the meanings of these terms when writing an essay, in order to successfully write and complete it. These words are considered 'directive words' and will help you ad the reader understand where you are going with you answer, and how. Understanding these words is a vital step to the essay writing process.
i know its 2 years later, but this answer may help anyone else looking for it! :)