CHASM

[noun] [C] - a very deep narrow opening in rock, earth or iceThey leaned over the rails and peered down into the dizzying chasm below.(figurative) Her recently published history of music is well-researched, but the exclusion of modern popular music presents a gaping chasm (= its absence means that the book does not seem complete).A chasm between two groups of people or two opinions is a very large difference between them.There is a chasm between what the government admits and the truth about the appalling situation.There is still a vast economic chasm between developing countries and the United States.As president, he tried unsuccessfully to bridge the yawning chasm between (= to reduce the very large difference between) the north and the south.