Pueblo vs Zuni

Pueblo and Zuni both are nouns.

Word	Noun	Adjective	Verb	Adverb
Pueblo	Yes	No	No	No
Zuni	Yes	No	No	No

As nouns, Zuni is a hyponym of Pueblo; that is, Zuni is a word with a more specific, narrower meaning than Pueblo:

Pueblo: a member of any of about two dozen Native American peoples called `Pueblos' by the Spanish because they live in pueblos (villages built of adobe and rock)
Zuni: a member of the Pueblo people living in western New Mexico

Other hyponyms of Pueblo include Hopi, Taos.

Pueblo (noun)	Zuni (noun)
a city in Colorado to the south of Colorado Springs	a member of the Pueblo people living in western New Mexico
a member of any of about two dozen Native American peoples called `Pueblos' by the Spanish because they live in pueblos (villages built of adobe and rock)