Aliasing tail_maw → tail_mouth
Link to alias

Reason:

Same thing.

They actually aren't the same thing. Similar to tentacle_maw, tail_maw actually refers to a specific type of mouth that opens up in multiple sections like a flower:

post #365630 post #560987 post #476083

That being said, they probably aren't the best choices for names since they overlap so much. Perhaps an implication instead?

Would go with an implication, even if often quite different it could still be seen as a mouth in some sense, just of a different kind than the standard humanoid one. Probably want to write some nifty wiki pages to define the difference, if we implicate.

Also alias:
tailmaw -> tail_maw

There's also:
open_maw vs. open_mouth
penis_maw vs. penis_mouth
tentacle_mouth vs. tentacle_maw

I'm going to deny the alias part based on the reasoning in Pickle's post in forum #151932:

Furrypickle said:

They're not actually that similar in appearance, except for their shared location. Because of the differences in how they look, I can see a use for wanting to search/blacklist one and not the other. And I don't see any benefit in aliasing them together and in losing that distinction. With only a few that were mistagged, the majority of uses seem to be keeping that distinction intact as well, indicating those who do use the tag find the distinction important.

There's also images like post #297483 where there's a tail_maw on the end of their tails, but it acts more like a covering for some kind of inflated tail penis, instead of leading to anything that could be called a "mouth".

I don't think an implication would really work either, but I'm still open to discussing it.