Dean vs James Dean

Dean and James Dean both are nouns.

Word	Noun	Adjective	Verb	Adverb
Dean	Yes	No	No	No
James Dean	Yes	No	No	No

As nouns, Dean and James Dean are synonyms defined as:

Dean and James Dean: United States film actor whose moody rebellious roles made him a cult figure (1931-1955)

Other synonyms of Dean include James Byron Dean.

Dean (noun)	James Dean (noun)
United States film actor whose moody rebellious roles made him a cult figure (1931-1955)	United States film actor whose moody rebellious roles made him a cult figure (1931-1955)