WIP vs. UFO

Last night, I had an evening to myself that I finally decided to use to work on a WIP. Here's the progress I've made on my Quilt-A-Long Quilt. Yes, that event held by the Old Red Barn Co. has come and gone, but I'm slow (and apparently didn't accurate read the directions to see that each block was supposed to be different -I guess I really like consistency and even if not, the thought of ripping out my rows entered my mind for about a half a second).

But anyways, as I was working along on this project, I started thinking about the terms "Works in Progress" (WIPs) vs. "Unfinished Objects" (UFOs). Now, I know a lot of quilters use these interchangeably, but I feel like there's definitely a different.

A WIP gives a connotation that you're still working on it - you've visited it fairly recently and while it may not be on the top of the pile, it's still got a shot of getting completed sometime in the foreseeable future.

Whereas, a UFO, well that poor little project has been shoved in a back closet somewhere again - just hoping to see the light of day and the sewing machine. A UFO may or may not be remembered by me, and may have lost my interest so much that I can't even fathom finish it.

So, I guess my question is, when does a WIP become a UFO? Is there some point in time that any illusion of making progress on that project should be given up?