keystone -> kaname-ishi

BUR #27247 has been approved by @nonamethanks.

create alias keystone -> kaname-ishi

Kaname-ishi is a uniquely Japanese cultural feature with no English eqiuvalent, so translating it doesn't serve any purpose. Additionally, this tag is confusing for users familiar with the English word, which means something totally unrelated. This alias can be removed if people want to use keystone for its English meaning.

This raises the question: is this, under either tag name, a Hinanawi Tenshi padding tag?
keystone -touhou -hinanawi_tenshi has 10 results.

Could we safely mass update it to rock shimenawa or something and get rid of the tag?

There aren't too many, but there are some non-Touhou posts that are correctly tagged this, like post #1184902 or post #5883455 and its children.

But the vast majority are of Hinanawi Tenshi, and even when she's removed its mostly Touhou. Let that speak as it will. Though since its something that will show up in non-Touhou art and appears culturally unique, there might be a point in keeping the tag.

The bulk update request #27247 (forum #284535) has been approved by @nonamethanks.

Keystone seems like a really bad option, especially when online sources seem to use other terms. Wikipedia uses terms like "foundation stone" or "cap stone" while other sources (ref 1, ref 2, ref 3) seem to use the term "pivot-stone" or "pivot stone."

GreyOmega said:

Keystone seems like a really bad option, especially when online sources seem to use other terms. Wikipedia uses terms like "foundation stone" or "cap stone" while other sources (ref 1, ref 2, ref 3) seem to use the term "pivot-stone" or "pivot stone."

That's what the tag used to be called, this BUR simply moved it to kaname-ishi.

We've used this name for years so it's not a big deal to keep the alias for a while in order for people to get used to the new name, especially given how unintuitive and detached from the actual term the old name was.