Pearl Buck vs Pearl S. Buck

Pearl Buck and Pearl S. Buck both are nouns.

Word	Noun	Adjective	Verb	Adverb
Pearl Buck	Yes	No	No	No
Pearl S. Buck	Yes	No	No	No

As nouns, Pearl Buck and Pearl S. Buck are synonyms defined as:

Pearl Buck and Pearl S. Buck: United States author whose novels drew on her experiences as a missionary in China (1892-1973)

Other synonyms of Pearl Buck include Buck, Pearl Sydenstricker Buck.

Pearl Buck (noun)	Pearl S. Buck (noun)
United States author whose novels drew on her experiences as a missionary in China (1892-1973)	United States author whose novels drew on her experiences as a missionary in China (1892-1973)