I think word-substitution is redundant since we already have single-word-requests, and phrase-requests, if necessary. The 60 or so tagged questions do not disagree with me by much.
Its current info says:
This tag is for questions seeking a single word or phrase which can replace a larger phrase or idea while conveying the same meaning.
I propose we either delete the tag, or make it a synonym for SWRs. Thoughts?