Maternity ___ (4)
'maternity' is the definition.
(I know that maternity can be written as motherhood)
This is all the clue.
(Other definitions for motherhood that I've seen before include "Condition of some women" , "Woman's state of having children" , "Maternity" .)
(Other definitions for ward that I've seen before include "Division of borough" , "Doctor in 5A 1D [PROFUMO AFFAIR]" , "Hospital unit" , "treatment room" , "Hospital room; part of borough" .)