Aliasing facial_mark → facial_markings
Link to alias

Reason:

Means the same thing. Fairly common variation so it would be good to alias.

don't we usually prefer the singular form, rather than plural?

Random said:
don't we usually prefer the singular form, rather than plural?

Not for every single tag.
Bad example, but breasts instead of breast etc.

Random said:
don't we usually prefer the singular form, rather than plural?

Well that would be facial_marking which was aliased to --> facial_markings who knows how long ago along with most other forms of it. But I guess if an admin wanted to switch it around and re-alias face_markings, face_marking and facial_markings to --> facial_marking instead, they could. I'm not convinced it'd be worth all the rearrangement though. I'm just saying that all those forms were already aliased to --> facial_markings, and that facial_mark should probably be as well.

+1

Although I WOULD like some consistency between tag terminology, I don't think it's worth the effort to change to singular either.

body_markings, facial_markings, arm_markings, red_markings...
This seems consistent with the other tags. Plus one.