Create an Index from Scrivener

Sorry if this is a really basic question.

I want to create an index of terms in Scrivener based on an existing external text file of terms (e.g. an existing list of acronyms, or technical terms, etc). I think that if I can import this list into the Keyword HUD that would be a start. I’d rather not enter them one-by-one. That’s question number one.
Question number two is: How do I generate an index via compilation of my output document?

Or… is the answer to all this that I just do it in the word-processer after exporting from Scrivener? I had thought that Scrivener Keywords was the way to manage index entries, but I’m not sure.

Any suggestions would be greatly appreciated.