Perceives (6)
'perceives' is the definition.
('sense' can be a synonym of 'perceive')
This is the entire clue.
(Other definitions for senses that I've seen before include "Faculties for experiencing the world" , "The body has five of them" , "Sight, hearing, smell, taste and touch" , "We have five, though some claim six" , "Feels intuitively" .)
'perceives' is the definition.
(seeing is a kind of perceiving)
This is all the clue.
(Other definitions for sees that I've seen before include "Understands" , "Bishoprics" , "Gets sight of" , "Dioceses; views" , "Observes the bishops' domains" .)