nguni

As a noun Khoikhoi

is alternative form of Khoekhoe|lang=en.

As a proper noun Nguni is

the group of Southern African indigenous peoples comprising the Zulu, Xhosa and Swazi nations.

As proper nouns the difference between khoisan and nguni

is that khoisan is the group of Southern African indigenous people, comprising the Khoi and San. Indigenous to the semi-desert regions while Nguni is the group of Southern African indigenous peoples comprising the Zulu, Xhosa and Swazi nations.

As a noun Khoisan

is a member of the Khoi or San people.

As a noun taxonomy

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

As a proper noun nguni is

the group of southern african indigenous peoples comprising the zulu, xhosa and swazi nations.