Stephen Foster vs Stephen Collins Foster

Stephen Foster and Stephen Collins Foster both are nouns.

Word	Noun	Adjective	Verb	Adverb
Stephen Foster	Yes	No	No	No
Stephen Collins Foster	Yes	No	No	No

As nouns, Stephen Foster and Stephen Collins Foster are synonyms defined as:

Stephen Foster and Stephen Collins Foster: United States songwriter whose songs embody the sentiment of the South before the American Civil War (1826-1864)

Other synonyms of Stephen Foster include Foster.

Stephen Foster (noun)	Stephen Collins Foster (noun)
United States songwriter whose songs embody the sentiment of the South before the American Civil War (1826-1864)	United States songwriter whose songs embody the sentiment of the South before the American Civil War (1826-1864)