Here is the classification of different types of rice according to the grain length:
Full-length rice has 100% of the rice grain length for a variety (e.g. Basmati).
Dubar has broken rice grains but longer than 75% of the length of the full-length rice.
Tibar has broken rice grains in the range of 60% to 75% of the length of the full-length rice.
Kinki has broken rice grains less than 60% of the full length of the rice grain.
Kinki rice is further classified into Mogra and Mini Mogra in the descending order of the rice grain size.