Catherine vs Catherine of Aragon

Catherine and Catherine of Aragon both are nouns.

Word	Noun	Adjective	Verb	Adverb
Catherine	Yes	No	No	No
Catherine of Aragon	Yes	No	No	No

As nouns, Catherine and Catherine of Aragon are synonyms defined as:

Catherine and Catherine of Aragon: first wife of Henry VIII; Henry VIII's divorce from her was the initial step of the Reformation in England (1485-1536)

Catherine (noun)	Catherine of Aragon (noun)
empress of Russia who greatly increased the territory of the empire (1729-1796)	first wife of Henry VIII; Henry VIII's divorce from her was the initial step of the Reformation in England (1485-1536)
first wife of Henry VIII; Henry VIII's divorce from her was the initial step of the Reformation in England (1485-1536)