Provinces concerning charity (6)
I believe the answer is:
realms
'provinces' is the definition.
(I've seen this in another clue)
'concerning charity' is the wordplay.
'concerning' becomes 're' (both can mean on a particular topic).
'charity' becomes 'alms' (alms is a kind of charity).
're'+'alms'='REALMS'
(Other definitions for realms that I've seen before include "Kingdoms, domains" , "Kingdoms, or fields of activity" , "regions" , "Domains - provinces" , "Kingdoms, or fields of interest" .)