I saw this topic on a blog recently and it got me to thinking: when IS it just another revision and when do you call what you're doing a rewrite? Here's my take on it:
Revision--a couple major changes; things can be cut and added but no more than half of your overall story or concept changed; and/or characters may come or go.
Rewrite--you're cutting more than half your story; your characters look nothing like when they started; your plot is practically unrecognizable from the first draft; and/or you're adding a boatload of new words, doubling the length of your story.
I think I've done a little of both with this story because what I'm revising now looks nothing like what I started with, besides a few main elements. I thought it might have series potential but now it's a standalone. I started with a male MC and now he's a girl (without the sex-change operation!). I started over in Paris but moved back to the states. I started in first person but now it's third. Yeah, I think there's been at least one major rewrite with this WIP.
At the moment, I'm doing a bit of revising, playing with what's already written, changing some things, deleting some characters. But the story's genre morphed from a YA action/adventure with a touch of kissing into more of a YA romantic comedy. Once I thought of it as a rom-com, things just fell into place. Of course, that means that I need to add the male MC's POV in to balance out the romantic part. His point of view will also help answer some sticky "why" questions, I think. So, I consider that part of it to be rewriting.
Can you do both at once? I *think* so...I'll have to let you know how it goes. (All things considered, with the addition of another person's POV, this is technically more of a rewrite.)
What do you all think? When is it a rewrite and when is it just revision?