Common, widespread (7)
I believe the answer is:
general
I believe this clue is a double definition.
'common' is the first definition.
(I know that common can be written as general)
'widespread' is the second definition.
(I know that widespread can be written as general)
(Other definitions for general that I've seen before include "Not specialised, rank" , "Usual; overall" , "Common - army officer" , "Normal; military rank" , "Enlarge for senior army officer" .)