( informal ) used to emphasize how much difference there is between two things :
There's a world of difference between liking someone and loving them.
( informal ) used to emphasize how much difference there is between two things :
There's a world of difference between liking someone and loving them.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005