Bulwer-Lytton vs First Baron Lytton

Bulwer-Lytton and First Baron Lytton both are nouns.

Word	Noun	Adjective	Verb	Adverb
Bulwer-Lytton	Yes	No	No	No
First Baron Lytton	Yes	No	No	No

As nouns, Bulwer-Lytton and First Baron Lytton are synonyms defined as:

Bulwer-Lytton and First Baron Lytton: English writer of historical romances (1803-1873)

Other synonyms of Bulwer-Lytton include Edward Bulwer-Lytton, Edward George Earle Bulwer-Lytton, Lytton.

Bulwer-Lytton (noun)	First Baron Lytton (noun)
English writer of historical romances (1803-1873)	English writer of historical romances (1803-1873)