(DIFFERENCE) [noun] [C] - an important difference between the ideas and opinions of two groups of peopleThere is a widening gulf between the middle classes and the poorest sections of society.It is hoped that the peace plan will bridge the gulf (= reduce the very large difference) between the government and the rebels.
GULF
Meaning of GULF in English
Cambridge English vocab. Кембриджский английский словарь. 2012