Notepad++ Compare two files and remove

Say I have two files. file1.txt and file2.txt

Both files contains a list of shoe brands name (1000+ names), like this:

brand1 brand2 brand3 brand...

Now - I want to compare file1 to file2, delete all the reoccurring entries and only show me Whats in files1 that's not in file2 and vice versa.

The goal in other words is to see what's not in the opposite file since these entries is going to be typed manually into a product backoffice for two different categories so that they'll match/be the same in the end.

Would the plugin "Compare" of Notepad++ would do the trick?

You can install it from the menu of Notepad++ plugins=> Plugin Manager=> Compare 1.5.6

Here's the official description: A very useful diff plugin to show the difference between 2 files (side by side). Author: Ty Landercasper, now maintained and updated by Jean-Sebastien Leroy Source: http://sourceforge.net/projects/npp-plugins/files/ComparePlugin/Compare_1_5_5_src.zip/download

An old question, but...

1. Compare the files in WinMerge
2. Tools -> Generate Patch (save this)

3. The patch has changes from both, but also extra markup. In notepad++, do the following replaces:

       Search Mode:  Regular Expression
       Find What:    ^[0-9-].*$
       Replace With: <blank>
       Replace All
   

   .

       Search Mode:  Regular Expression
       Find What:    (<|>)
       Replace With: <blank>
       Replace All
   

4. Use the TextFX plugin in notepad++ either do a Tools->case-insensitive sort (output UNIQUE option selected), or Edit->Delete blank lines

Bit mungy, but I've yet to find a tool that will do this in one click.