I have noticed that there are two meta-tags called scope and on-topic on this meta. They look very similar to me.
Tag-excerpt for scope and tag-excerpt for on-topic are the same at this moment:
When examining what is on- or off-topic, and why.
The tag on-topic also has tag-wiki.
When examining what is on-topic, and why.
My opinion is that these tags two tags should by synonimized. (But I cannot suggest the synonyms - I do not have sufficient number of upvotes in those tags.)