Ewe vs Kwa

Ewe and Kwa both are nouns.

Word	Noun	Adjective	Verb	Adverb
Ewe	Yes	No	No	No
Kwa	Yes	No	No	No

As nouns, Kwa is a hypernym of Ewe; that is, Kwa is a word with a broader meaning than Ewe:

Ewe: a Kwa language spoken by the Ewe in Ghana and Togo and Benin
Kwa: a group of African language in the Niger-Congo group spoken from the Ivory Coast east to Nigeria

Ewe (noun)	Kwa (noun)
a Kwa language spoken by the Ewe in Ghana and Togo and Benin	a group of African language in the Niger-Congo group spoken from the Ivory Coast east to Nigeria
a member of a people living in southern Benin and Togo and southeastern Ghana