city vs Abilene

city and Abilene both are nouns.

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

city (noun)	Abilene (noun)
people living in a large densely populated municipality	a city in central Texas
a large and densely populated urban area; may include several independent administrative districts	a town in central Kansas to the west of Topeka; home of Dwight D. Eisenhower
an incorporated administrative district established by state charter