Khoisan vs natural language

Khoisan and natural language both are nouns.

Word	Noun	Adjective	Verb	Adverb
Khoisan	Yes	No	No	No
natural language	Yes	No	No	No

As nouns, natural language is a hypernym of Khoisan; that is, natural language is a word with a broader meaning than Khoisan:

Khoisan: a family of languages spoken in southern Africa
natural language: a human written or spoken language used by a community; opposed to e.g. a computer language

Other hypernyms of Khoisan include tongue.

Khoisan (noun)	natural language (noun)
a family of languages spoken in southern Africa	a human written or spoken language used by a community; opposed to e.g. a computer language
nomadic hunters and gatherers who live in southern Africa