The bulk update request #11338 is pending approval.

create alias hiding_face (345) -> covering_face (2790)
create alias hiding_crotch (4) -> covering_crotch (6115)
create alias hiding_erection (456) -> covering_erection (113)
create alias hiding_penis (108) -> covering_penis (150)
create alias hiding_pussy (86) -> covering_vulva (407)
create alias hiding_nipple (6) -> covering_chest (422)
create implication covering_erection (113) -> covering_penis (150)

Reason: hiding and covering appear to depict the same thing in this case, but "covering" is a more objective visual description.

(There is also 1 instance of covering_arousal, but I don't know if we need to do anything about that.)