The following whitespace tags should all be synonymized/merged:
The following should be considered:
These two tags tend to allude to spacing between HTML elements, or objects whether it be related to graphics or otherwise. Most often when tagged along with CSS or HTML, it is meant to refer to either padding or margin, depending on context. In most other cases, these two are use meta-like. I think space (which in a few cases is also used to refer to outer space) should be synonymized, and spacing should be destroyed to avoid confusion, as it is a very general term that applies to a very wide range of things.
Also, we could possibly consider these two:
These tags appear a bit meta-like and should be explained in the context of the post. It's not really a good "category" in terms of tags. It should be a synonym so that it doesn't get recreated later.