While perusing the ambiguous language tag (1/3 of the way through right now!), I checked out what tags we currently have with either "language", "lang", or "lingu" in them. One of the ones that caught my eye was which-language (27). They're all questions about "Which programming language should I use for this project?" Do we think it is better to keep this kind of tag, or should it be reassigned to, say, programming-languages? All 27 currently tagged are about programming languages specifically.
We already have question-descriptive tags that apply to the nature of the question itself rather than the problem raised in the question. Probably the most well-known one is the subjective tag. There is merit to keeping these kind of tags if they are a prevalent class of questions; it would be useful for specific classes of question that could probably benefit from being grouped together. However, the decision of whether a question class is prevalent enough is bigger than one person can make. Care needs to be exercised to prevent a growing snowball of tags resulting things in like what-is-this and how-do-i, which in turn means tags will lean away from actually describing the problem itself.
While we're at it, the related language-choice (15) is 40% questions that would be which-language, and in review of the other 60%, I'm also concerned about its status as a tag.