Kenyan vs African

Kenyan and African both are nouns.

Word	Noun	Adjective	Verb	Adverb
Kenyan	Yes	Yes	No	No
African	Yes	Yes	No	No

As nouns, African is a hypernym of Kenyan; that is, African is a word with a broader meaning than Kenyan:

Kenyan (noun)	African (noun)
a native or inhabitant of Kenya	a native or inhabitant of Africa

Kenyan (adjective)	African (adjective)
of or relating to or characteristic of Kenya or its people	of or relating to the nations of Africa or their peoples