Nakiri is a Japanese-style vegetable knife with thin blade profile and popular throughout Japan. It's mainly used for quickly and efficiently chopping, slicing, and mincing vegetables and fruits. The flatness of a nakiri means you can cut all the way through to the cutting board, without the rocking motion or horizontal pull or push.
On the other hand, "Chuka bocho" or Chinese cleaver is a thin-bladed knife designed for general kitchen tasks. The tall blade allows you to easily and safely cut large fruit and vegetables. It's basically a Chinese-style multipurpose knife.