Is tailcoat a coat or a jacket? Or create new *_tailcoat tags?

Looking at the name, tailcoat might be considered a coat, but depending on how noticeable the tail part is, it can heavily resemble a jacket. Is it its own category or does it fall under coat or jacket? Furthermore, since we don’t have specific *_tailcoat tags (black tailcoat), we should decide on how it goes with other *_coat or *_jacket tags (e.g. black coat/black jacket). Or, create new *_tailcoat tags, which isn’t what’s usually preferred.

I made a similar topic a while back: topic #20701

I'm personally ok with tagging them as jackets if that's what the consensus is. I would prefer not to tag them as coats, though.

I think it depends a lot on the individual tailcoat. It doesn't feel right to tag Hu Tao's as either, and this is a vest.

Then give tailcoats their own tags? Such as black tailcoat in comparison to black coat or black jacket.