A manual for writers of research papers, theses, and dissertations, 7th edition - Kate L. Turabian 2007

Use your key terms to keep yourself on track
Drafting your report
Part I. Research and writing: from planning to production

As you draft, keep in front of you a separate list of the key terms for your general concepts that should run through your whole report. From time to time, check how often you've used those words, both those that run through the whole report and those that distinguish one section from another. But don't let those words stifle fresh thinking. If you find yourself wandering, let yourself go for a while. You may be developing an interesting idea. Follow it until you see where it takes you.