Yeah, in a way, but vignetting is usually a bit different. Vignetting is usually a stronger effect, while what I'm describing is usually much less strong or visible. Edge burning is subtle, it's usually soft and only suggests a bit of darkening. In what seems like two or three lifetimes ago when I was learning darkroom techniques I was taught to almost always add just a bit of exposure to the corners. a slight variation of burning in the edges, but only slightly different. It's purpose was not to 'frame' the center of interest, but to subtly suggest to the eye that it move into the image area instead of outside of the frame. The eye tends to move toward the lighter areas of an image, so this is intended to simply give the eye a hint as to where it should be going.
Here's a sort of example what I'm describing.