come out vs. turn out

When something “comes out,” it means that the entirety of the situation has been revealed to the public (진실이 알려지다, 사실이 드러나다). When something “turns out,” that means something ultimately becomes something else, or something is proved/found to be something else (되다, 밝혀지다). Take a look at the following examples:

• When I first saw the film, it struck me as the most impressively articulated response to the Reagan era I'd seen. Since then it has come out that Moore has -- either intentionally or through lack of skill -- fuzzied the chronology of events, creating the impression that the plant closings and layoffs took place all at once, around 1986 and '87, instead of over a period of more than a decade. (Washington Post, January 12, 1990)
  

• Much of the intelligence on Iran's nuclear facilities provided to UN inspectors by US spy agencies has turned out to be unfounded, diplomatic sources in Vienna said today (Guardian, February 22, 2007).