Although my current reputation bestows many other privileges, to be allowed to suggest a tag synonym requires that I first use the one I am suggesting should be obsolete, and gain 5 votes while using it, before I can even suggest it should be a synonym.
Why is suggesting synonyms a privilege that does not kick in for all tags at a reputation of around 1000?
In the meantime, while awaiting what I think would be a more workable system from proposing and voting on tag synonyms:
If you wish to suggest/discuss a tag synonym, please post a new question (rather than an answer to this one).