Word Macro to highlight similar words

Relatively new to the forum, and haven't been able to find a similar question to mine but apologies if this has been asked before...

I tend to write alot of prose in Word, and worry that sometimes I repeat adjectives/verbs too closely together. For example, I wouldn't want to use a word like "plethora" in a sentence, and then use it again 2 sentences later. Is there a way to write a macro that can review an entire Word document and highlight/bold/underline repeat words, or words that are used more than once? Obviously, I'd want to create exceptions for articles like "the" "a" etc., but it would be helpful to be able to call out any other words that have been used more than once. I think this type of thing would be most helpful for 5-6 page papers; obviously, for something much longer (like a book) it might be less useful.

Anyway, this is what I'd like to do but I'm totally lost as to how to even get started. I have a decent background with VBA for excel applications, but I've never tried it with Word. Any input is graciously accepted - thank you!

Thank You! This is essentially what I'm looking for, much appreciated!