John Augustus Roebling vs John A. Roebling

John Augustus Roebling and John A. Roebling both are nouns.

Word	Noun	Adjective	Verb	Adverb
John Augustus Roebling	Yes	No	No	No
John A. Roebling	Yes	No	No	No

As nouns, John Augustus Roebling and John A. Roebling are synonyms defined as:

John Augustus Roebling and John A. Roebling: United States engineer (born in Germany) who designed and began construction of the Brooklyn bridge (1806-1869)

Other synonyms of John Augustus Roebling include John Roebling, Roebling.

John Augustus Roebling (noun)	John A. Roebling (noun)
United States engineer (born in Germany) who designed and began construction of the Brooklyn bridge (1806-1869)	United States engineer (born in Germany) who designed and began construction of the Brooklyn bridge (1806-1869)