Warning; carefulness (7)
I believe the answer is:
caution
I believe this clue is a double definition.
'warning' is the first definition.
(I know that caution is a type of warning)
'carefulness' is the second definition.
(caution is a kind of carefulness)
(Other definitions for caution that I've seen before include "Official warning" , "Care taken to avoid danger" , "Attention to possible danger" , "Circumspection" , "Give a warning to" .)