Arthur M. Schlesinger vs Arthur Schlesinger Jr.

Arthur M. Schlesinger and Arthur Schlesinger Jr. both are nouns.

Word	Noun	Adjective	Verb	Adverb
Arthur M. Schlesinger	Yes	No	No	No
Arthur Schlesinger Jr.	Yes	No	No	No

As nouns, Arthur M. Schlesinger and Arthur Schlesinger Jr. are synonyms defined as:

Arthur M. Schlesinger and Arthur Schlesinger Jr.: United States historian and advisor to President Kennedy (born in 1917)

Other synonyms of Arthur M. Schlesinger include Arthur Meier Schlesinger Jr., Arthur Schlesinger, Schlesinger.

Arthur M. Schlesinger (noun)	Arthur Schlesinger Jr. (noun)
United States historian and advisor to President Kennedy (born in 1917)	United States historian and advisor to President Kennedy (born in 1917)
United States historian (1888-1965)