Napoleon I vs Napoleon

Napoleon I and Napoleon both are nouns.

Word	Noun	Adjective	Verb	Adverb
Napoleon I	Yes	No	No	No
Napoleon	Yes	No	No	No

As nouns, Napoleon I and Napoleon are synonyms defined as:

Napoleon I and Napoleon: French general who became emperor of the French (1769-1821)

Other synonyms of Napoleon I include Bonaparte, Little Corporal, Napoleon Bonaparte.

Napoleon I (noun)	Napoleon (noun)
French general who became emperor of the French (1769-1821)	a card game similar to whist; usually played for stakes
	French general who became emperor of the French (1769-1821)