Does anyone have advice on how to display the difference between two word documents? I am thinking of something like WinMerge but for word documents and not source code. If there is built-in functionality to do this, I cannot find it. (Word 2010+)
There is a built-in functionality for this in Word with some decent comparison options. In Word 2010, look on the Review tab, near the right, where you'll see Compare. Choices under there include Compare... and Combine...
From there, you get the Compare Documents dialog box, where you select the two files to compare, and have the option (under More >>) to fine-tune how you want to compare the documents.
For more help, check out the BrainStorm video tutorial on Compare Documents.