Johnston vs Joseph E. Johnston

Johnston and Joseph E. Johnston both are nouns.

Word	Noun	Adjective	Verb	Adverb
Johnston	Yes	No	No	No
Joseph E. Johnston	Yes	No	No	No

As nouns, Johnston and Joseph E. Johnston are synonyms defined as:

Johnston and Joseph E. Johnston: Confederate general in the American Civil War; led the Confederate troops in the West (1807-1891)

Other synonyms of Johnston include J. E. Johnston, Joseph Eggleston Johnston.

Johnston (noun)	Joseph E. Johnston (noun)
Confederate general in the American Civil War; led the Confederate troops in the West (1807-1891)	Confederate general in the American Civil War; led the Confederate troops in the West (1807-1891)