Saint Vincent and the Grenadines is about 6 times smaller than Comoros.

Comoros is approximately 2,235 sq km, while Saint Vincent and the Grenadines is approximately 389 sq km, making Saint Vincent and the Grenadines 17.4% the size of Comoros. Meanwhile, the population of Comoros is ~876,437 people (775,468 fewer people live in Saint Vincent and the Grenadines).
Tip: This to-scale comparison of Comoros vs. Saint Vincent and the Grenadines uses the Mercator projection, which distorts the size of regions near the poles.