James J. Hill vs James Jerome Hill

James J. Hill and James Jerome Hill both are nouns.

Word	Noun	Adjective	Verb	Adverb
James J. Hill	Yes	No	No	No
James Jerome Hill	Yes	No	No	No

As nouns, James J. Hill and James Jerome Hill are synonyms defined as:

James J. Hill and James Jerome Hill: United States railroad tycoon (1838-1916)

Other synonyms of James J. Hill include Hill, J. J. Hill.

James J. Hill (noun)	James Jerome Hill (noun)
United States railroad tycoon (1838-1916)	United States railroad tycoon (1838-1916)