Background Pony #24AA
Don’t say they’re identical and then go on to explain how they’re not identical…
It does bring the tag’s necessity into question by how it’s used overwhelmingly by 2 users only, but at least it seems consistent and clear to define.
I don’t really care whether it’s renamed or not, as long as it doesn’t give rise to both
underareola
and undernipple
which strikes me as excessively specific.