Very useful academic word list. Combine it with the Adobe Advanced PDF search techniques in the Computer-assited writing section of this site to see how these words are used in your field.
Transition words can help you to improve the flow of your writing. These are words like “next, then, in addition, as a result, however,” etc. that connect sentences, paragraphs, or sections to each other logically. The links below are useful but remember that different transitions are more common in different fields. You can check which words are most common by using Adobe Acrobat advanced search functions in the Computer-assisted writing section of this site.