I have to give a shout-out to this word frequency counter add-in for Word:
Word frequency is something I review when self-editing. Get a count of each word, decide which ones I’m overusing, do a search-and-replace-with-highlight in Word and it’s easy to read and consider options.
Word will count words, but not give you a frequency. There are web sites that will do this, but you have to upload your file to their site and some restrict the size of the document (though, as a trade-off, they often do other analysis as well). The add-in doesn’t require Internet access, runs within Word, and can export to a separate file which I copy to Excel and massage further.
Now, if it would only measure proximity of words as well so I can see that I’ve used ‘word’ three times in the first paragraph and three more in the second and twice in the third ..