He tries to keep his private life and public life 'separate' (from each other). = He tries to keep his private life 'separate' from his public life.
('US') He fell and 'separated' [='dislocated'] his shoulder. [=caused the bone in his shoulder to move out of its proper position]
The competition has been easy to this point, but now it gets tough and we'll really begin to 'separate the men from the boys'.
(..) Yeah, OK, - It was a bad night, What is it? - Baker gave us the wrong information, - What are you talking about? - We were told, on a separate channel, to make entry through the rear of the premises while the situation was still hot, - Everybody was on channel three, - We were on channel four, (..)1994 The Glass Shield