The bulk update request #9770 is pending approval.

create alias navel_tattoo (78) -> pubic_tattoo (1476)

Reason: Redundant tags are redundant. Also echoing the e6ai's BUR

There's overlap, but they're not the same. There also seems to be some mistagging of navel_tattoo on things that are a bit too low. But like, stuff around the belly button is not on the pubic mound. This image in particular is nowhere near it:
post #2997862