Brown rice is a whole grain rice with the inedible outer hull removed. This kind of rice sheds its outer hull or husk but the bran and germ layer remain on, constituting the brown or tan colour of rice. White rice is the same grain without the hull, the bran layer, and the cereal germ. Red rice, gold rice, and black rice are all whole rices with differently pigmented outer layers.
Brown rice
African rice in its inedible husk (seed rice, will sprout)
The same rice, husked (whole brown rice) (colour varies by variety)
The same rice, with almost all bran and germ removed to make white rice
A whole grain is a grain of any cereal and pseudocereal that contains the endosperm, germ, and bran, in contrast to refined grains, which retain only the endosperm.
African rice in its inedible husk (seed rice, will sprout)
The same rice, dehusked (whole grain rice, colour varies by variety)
The same rice, with almost all bran and germ removed to make white rice