Wild Bill Hickok vs James Butler Hickock

Wild Bill Hickok and James Butler Hickock both are nouns.

Word	Noun	Adjective	Verb	Adverb
Wild Bill Hickok	Yes	No	No	No
James Butler Hickock	Yes	No	No	No

As nouns, Wild Bill Hickok and James Butler Hickock are synonyms defined as:

Wild Bill Hickok and James Butler Hickock: frontier marshal whose adventures have become legendary (1837-1876)

Other synonyms of Wild Bill Hickok include Hickock, Wild Bill Hickock.

Wild Bill Hickok (noun)	James Butler Hickock (noun)
frontier marshal whose adventures have become legendary (1837-1876)	frontier marshal whose adventures have become legendary (1837-1876)