Deleting (all-at-once) words with specific character or paragraph style

Hello,

I need to write (did’t done it yet because, I’m asking before it’s too late) a document in LibreOffice Writer. I need to put in there a text witch is only a working material, it shuold not be there at the end. Is there a way set those words in a diferent character (of paragraph) style, and delet them by style criteria (only the words with applyed style).

Thanks

I think you can do it, with the extension:
http://extensions.libreoffice.org/extension-center/alternative-dialog-find-replace-for-writer