Penchant, predilection (5)
I believe the answer is:
taste
I believe this is a double definition.
'penchant' is the first definition.
(I know that penchant can be written as taste)
'predilection' is the second definition.
(I know that predilection can be written as taste)
(Other definitions for taste that I've seen before include "Savour; discernment" , "style" , "A test (anag)" , "Fine perception" , "Experience - discrimination" .)