tables is a very broad tag, which currently has no tag wiki and encompasses everything from questions about Excel, SQL tables, tables in Microsoft Word, and a whole host of other things. In other words, it doesn't represent a single area of expertise.
I feel that the MS Word ones could possibly be split into a microsoft-word-tables tag, as that is a specific function set under Word that people do have specific problems with formatting, etc. But the rest of the questions I feel don't actually need the tag at all, and it could be removed outright.
microsoft-excelare not about Excel tables in the technical sense. If used properly, the
excel-tablestag would be pretty sparse. Worse yet, the questions here suggest the tag would be misapplied pretty often.