Advantage point (3)
I believe the answer is:
use
I believe this clue is a double definition.
'advantage' is the first definition.
(thesaurus)
'point' is the second definition.
(thesaurus)
(Other definitions for use that I've seen before include "Practise" , "Put to a particular purpose" , "Employ - advantage" , "particular church liturgy" , "Exploit unfairly" .)