Simply put, nigiri is a type of sushi that consists of a small vinegar rice ball (sushi rice or sticky rice) topped with a slice of raw seafood or fish. On the other hand, onigiri is a type of ...

Maki sushi and nigiri are the two main subcategories in the sushi family. Sashimi is often lumped in with them but, because it doesn't have rice, it's not actually a type of sushi. From handrolls ...