Biloxi vs Siouan language

Biloxi and Siouan language both are nouns.

Word	Noun	Adjective	Verb	Adverb
Biloxi	Yes	No	No	No
Siouan language	Yes	No	No	No

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

Biloxi: the Siouan language spoken by the Biloxi
Siouan language: a family of North American Indian languages spoken by the Sioux

Other hypernyms of Biloxi include Siouan.

Biloxi (noun)	Siouan language (noun)
the Siouan language spoken by the Biloxi	a family of North American Indian languages spoken by the Sioux
an old town in southern Mississippi on the Gulf of Mexico
a member of the Siouan people of southeastern Mississippi