Is there a known difference in usage between these two tags?
Used when an image appears to be bordered by a photo frame and/or matte.
When a picture has a border along its sides.
Some posts from both tags chosen at random:
Other than metaphysical outlining,there seems to be other possible uses for the 2 tags;such as
Border being used for the physically-present border (with gates,sentries and the like.Similar to post #1010806)
Frame used for depicting actual picture-frames (in-use)
Updated by Aristocrat