Los Angeles vs City of the Angels

Los Angeles and City of the Angels both are nouns.

Word	Noun	Adjective	Verb	Adverb
Los Angeles	Yes	No	No	No
City of the Angels	Yes	No	No	No

As nouns, Los Angeles and City of the Angels are synonyms defined as:

Los Angeles and City of the Angels: a city in southern California; motion picture capital of the world; most populous city of California and second largest in the United States

Other synonyms of Los Angeles include L.A..

Los Angeles (noun)	City of the Angels (noun)
a city in southern California; motion picture capital of the world; most populous city of California and second largest in the United States	a city in southern California; motion picture capital of the world; most populous city of California and second largest in the United States