Miles Davis vs Miles Dewey Davis Jr.

Miles Davis and Miles Dewey Davis Jr. both are nouns.

Word	Noun	Adjective	Verb	Adverb
Miles Davis	Yes	No	No	No
Miles Dewey Davis Jr.	Yes	No	No	No

As nouns, Miles Davis and Miles Dewey Davis Jr. are synonyms defined as:

Miles Davis and Miles Dewey Davis Jr.: United States jazz musician; noted for his trumpet style (1926-1991)

Other synonyms of Miles Davis include Davis.

Miles Davis (noun)	Miles Dewey Davis Jr. (noun)
United States jazz musician; noted for his trumpet style (1926-1991)	United States jazz musician; noted for his trumpet style (1926-1991)