city vs L.A.

city and L.A. both are nouns.

Word	Noun	Adjective	Verb	Adverb
city	Yes	No	No	No
L.A.	Yes	No	No	No

city (noun)	L.A. (noun)
people living in a large densely populated municipality	a city in southern California; motion picture capital of the world; most populous city of California and second largest in the United States
a large and densely populated urban area; may include several independent administrative districts
an incorporated administrative district established by state charter