Hello, @kristopher-gill, @alan-kilborn and all,
Personally, I would use the following regexes, having the same concept of Nth word :
The regex \A\W*(?:\w+\W+){N-1}\K\w+ finds/marks the Nth word, of any file containing, at least, N words
The regex (\A|\R\h*\R)\W*(?:\w+\W+){N-1}\K\w+ finds/marks the Nth word, of any paragrah containing, at least, N words
The regex (?-s)^[^\w\r\n]*(?:\w+[^\w\r\n]+){N-1}\K\w+ finds/marks the Nth word, of any line containing, at least, N words
Notes :
The Regular expression radio button is selected
The Wrap around option is checked
In case of a Find Next search, move to beginning of file, first ( Ctrl + Home )
Use, either, the Find Next, the Find All in Current Document, the Find All in All Opened Documents or the Mark All button
Best Regards,
guy038