Please note that the program is case sensitive by default, so a word “car” is not similar to “Car” because of the capital letter. You can currently overcome this by one of the following actions:
1. Go to the program settings, select “Tools/Settings/Generating Index” and enable the option “Ignore case sensitivity“. This will make good difference, as it will deal with all book words as small letters, which will result both the 2 words “car” & “Car” be considered the same word. So just enable this option, and check the results in Step3.
2. In Step3 click the “Merge duplicates” button in the top bar. This button will show a dialog with all the duplicate words in the results table to merge them all automatically , and the suggested final word for each duplicate words. This feature will make things very easy for you.