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'.
(..) inside an event horizon. Perhaps we are actually living inside a black hole. Narrator: Every black hole might be the origin Of an entirely separate universe. If that's true, There could be billions of universes out there... ...Each one (..)2010 TvShow: How the Universe Works Title: Black Holes Season: 1 Episode 2