John P. Marquand vs Marquand

John P. Marquand and Marquand both are nouns.

Word	Noun	Adjective	Verb	Adverb
John P. Marquand	Yes	No	No	No
Marquand	Yes	No	No	No

As nouns, John P. Marquand and Marquand are synonyms defined as:

John P. Marquand and Marquand: United States writer who created the Japanese detective Mr. Moto and wrote other novels as well (1893-1960)

Other synonyms of John P. Marquand include John Marquand, John Philip Marquand.

John P. Marquand (noun)	Marquand (noun)
United States writer who created the Japanese detective Mr. Moto and wrote other novels as well (1893-1960)	United States writer who created the Japanese detective Mr. Moto and wrote other novels as well (1893-1960)