city vs Giza

city and Giza both are nouns.

Word	Noun	Adjective	Verb	Adverb
city	Yes	No	No	No
Giza	Yes	No	No	No

city (noun)	Giza (noun)
people living in a large densely populated municipality	an ancient Egyptian city on the west bank of the Nile opposite Cairo; site of three Great Pyramids and the Sphinx
a large and densely populated urban area; may include several independent administrative districts
an incorporated administrative district established by state charter