Separate, distinct (8)
I believe the answer is:
discrete
This clue is a double definition.
'separate' is the first definition.
(similar in meaning)
'distinct' is the second definition.
(I know that distinct can be written as discrete)
(Other definitions for discrete that I've seen before include "Individual" , "independent" , "Individually distinct, maybe discreet" , "Unattached" , "Individually separate and distinct" .)