I recently noticed a new tag off-or-on-topic which seems to be a direct synonym for the tag scope. Here is the usage guidance for the common tag "scope" that is used in many Stacks:
Use this tag when examining what is on-topic or off-topic, and why.
Compared to the new tag "on-or-off-topic":
Questions about whether particular topics are off or on topic
Can we just make the new tag (on-or-off-topic) a synonym?