The phrase "are vast differences between" is correct and usable in written English.
It can be used when discussing the distinctions or variations that exist between two or more subjects or entities.
Example: "There are vast differences between the two political systems, which affect their governance and public policies."
Alternatives: "there are significant disparities between" or "there are considerable differences among".
I know there are vast differences between different types of guns, but when it comes to deadly weapons, nuances don't matter.
At the same time, we have shown that there are vast differences between the reactivities of different organic RMs, which spurs hope that RMs can be designed to be sufficiently stable for long-term operation.
To be sure, there are vast differences between then and now.
There are vast differences between recent graduates' innate abilities and attitudes towards work compared to previous generations.
There are vast differences between the circumstances in Tunisia, Egypt, Libya, Syria and Saudi Arabia; American interests in those countries; and our capacity to influence events there.
Although there are vast differences between the networks of cities along the ancient Silk Roads and the 21st-century system of global value chains and competitive advantage, there are also striking parallels.
However, there are vast differences in prices between brands, and all brands operate at very high margins," Tandon tells TechCrunch.
There are, to be sure, vast differences between South Asia and sub-Saharan Africa, the disease's biggest killing field - culturally, politically, economically and geographically.
In any case there are vast cultural differences between the great agricultural provinces of Shandong and Henan and the bustling commerciality of the Pearl River delta and Shanghai.
There are also vast differences between the markets in London and New York.
Having said that, there are still vast differences between the performance of washing machines available to buy new today.
