bengkulu

As a noun taxonomy

is the science or the technique used to make a classification.

As a proper noun bengkulu is

a province of indonesia.

As proper nouns the difference between bengkulu and rejang

is that bengkulu is a province of indonesia while rejang is an ethnic group living mainly on the southwest coast of the island of sumatra, on the slopes of the mountain range, in the province of bengkulu, indonesia.

As a noun rejang is

a member of this group.