A fairly new member of our MSE community, namely the user Andrews, started to reshape our own physical questions fundamentally basically by retagging them in an appropriate manner. Another recently posted Meta question of his own deals in more detail with his aim. I appreciate his effort and it is good to see that there are in fact people who bother to accomplish such a comprehensive task.
However, today I reviewed a Suggested Edit from the aforementioned user adding the newly created tag topological-quantum-field-theory. As he pointed out by himself within the linked Meta Question the currently existing tag tqft is not adequate, especially the current name. To be precise he wrote
...although tqft is an abbreviation, it's hard for users to find the existence of this tag or recall this when adding tags.[...] I sincerely suggest rename this tag as [topological-field-theory] for users' convenience, and this doesn't change its meaning. What's more, the tag info should be updated.
Now we are left with the situation of two identical tags which are not listed as synonyms. For the sake of clarity I would suggest to keep the newly created topological-quantum-field-theory and to mark the old tqft as synonym following the argumentation from above as it is more clear what the first one refers to.