The phrase "a vast gap between" is correct and usable in written English.
It can be used to describe a significant difference or disparity between two things, such as ideas, groups, or situations.
Example: "There is a vast gap between the expectations of the management and the reality of the employees' experiences."
Alternatives: "a significant divide between" or "a large disparity between".
But Robert convinced me that there was a vast gap between Hollywood, California and Austin, Texas".
She summarized that thought quite simply: "There is a vast gap between the Marine Corps and the Peace Corps.
But there is a vast gap between even the most interactive computer game and genuine narrative, and this novel dissipates much of its power in that empty space.
We know that such a vast gap between the richest and the rest of us is bad for our economy and society.
Indeed, there remains a vast gap between the Japan of today and a Japan that might be able to defend itself.
An unexpected role model, perhaps, for the president of a country in which a vast gap between rich and poor has increased over his 33-year rule.
A vast gap yawns between the well-connected, penthouse-owning rich and the slum-dwelling, unemployed poor like Mr. Silva.
At the very least this estimate provides a glimpse at the vast gap between the chance appearance of a single functional ribozyme replicase (plausible if its length is <100 nucleotides) and that of more complex entities such as a rudimentary machinery necessary for translation.
Until now, there was nothing to fill the vast gap between a fashion-aspirant megabrand like Club Monaco and a Barneys or Bergdorf, in price and quality.
He also said the nation needed to reduce the vast gap between the wealthy and a jobless underclass that has little hope of climbing out of poverty except by crime.
They point to the vast gap between what the authorities say is a healthy amount of salt and the amounts that people around the world are actually consuming.
