city vs territorial division

city and territorial division both are nouns.

Word	Noun	Adjective	Verb	Adverb
city	Yes	No	No	No
territorial division	Yes	No	No	No

As nouns, territorial division is a hypernym of city; that is, territorial division is a word with a broader meaning than city:

Other hypernyms of city include administrative district, administrative division.

city (noun)	territorial division (noun)
people living in a large densely populated municipality	a district defined for administrative purposes
a large and densely populated urban area; may include several independent administrative districts
an incorporated administrative district established by state charter