During an interview, you are often asked to define two terms used in the job and contrast them. This is an example of that type of question. When practicing interview questions, you'll note that your response is typically structured in a specific way. This makes responding to questions during the interview easier because you don't have to think about how to structure your answer. In this case, you want first to define each term and then describe the differences between them. You may also want to provide an example of how the concepts are used and your work.