Campeche vs Campeche City

Campeche and Campeche City both are nouns.

Word	Noun	Adjective	Verb	Adverb
Campeche	Yes	No	No	No
Campeche City	Yes	No	No	No

As nouns, Campeche and Campeche City are synonyms defined as:

Campeche (noun)	Campeche City (noun)
a Mexican city on the Bay of Campeche	a Mexican city on the Bay of Campeche
a Mexican state on the eastern part of the Gulf of Campeche