Sacramento vs capital of California

Sacramento and capital of California both are nouns.

Word	Noun	Adjective	Verb	Adverb
Sacramento	Yes	No	No	No
capital of California	Yes	No	No	No

As nouns, Sacramento and capital of California are synonyms defined as:

Sacramento and capital of California: a city in north central California 75 miles to the northeast of San Francisco on the Sacramento River; capital of California

Sacramento (noun)	capital of California (noun)
a city in north central California 75 miles to the northeast of San Francisco on the Sacramento River; capital of California	a city in north central California 75 miles to the northeast of San Francisco on the Sacramento River; capital of California