Plugin count repetition of words and phrases with two and three words and display them in popup, separated for 3, 2 and one word phrase, sorted by number of repetition. There is a fourth display where all this data is merged and displayed in form when you can select it and copy/paste to appropriate field for keywords.
Most useful task for this plugin is when you write content, to adjust words to match your title and desired primary keyword phrase. That help you to have better Search Engine ranking for primary keyword - on-site SEO.
Keywor Extractor runs on PHP based hosting, in folder is php file to POST text data to processor and GET result to display.
Extract content of file into plugin folder folder (there is keywordextractor folder in archive)
Add keywordextractor to plugins and Theme buttons in configuration for editor