words is used in many questions, but it doesn't seem to have a specific meaning. All the questions are about words, even the one asking about a phrase or a sentence.
We should remove the tag.
I kind of agree, and there is a similar problem in that I don't know what the distinction between words and vocabulary is. If anything, they should be made synonyms. I would vote for making words a synonym of vocabulary because the latter I think has a sense of being about the words themselves rather than the words simply being there as part of a question about something else.