Performs (4)
'performs' is the definition.
(to do something is to perform or execute it)
This is the entire clue.
(Other definitions for does that I've seen before include "Tricks" , "Carries out" , "some females" , "At stag parties don't expect these" , "Executes - female deer" .)
'performs' is the definition.
(acting is a kind of performing)
This is all the clue.
(Other definitions for acts that I've seen before include "Turns" , "Follower of John" , "Major divisions of play" , "Behaves like thespian" , "5th NT book" .)