Sir Richard Burton vs Sir Richard Francis Burton

Sir Richard Burton and Sir Richard Francis Burton both are nouns.

Word	Noun	Adjective	Verb	Adverb
Sir Richard Burton	Yes	No	No	No
Sir Richard Francis Burton	Yes	No	No	No

As nouns, Sir Richard Burton and Sir Richard Francis Burton are synonyms defined as:

Sir Richard Burton and Sir Richard Francis Burton: English explorer who with John Speke was the first European to explore Lake Tanganyika (1821-1890)

Other synonyms of Sir Richard Burton include Burton, Richard Burton.

Sir Richard Burton (noun)	Sir Richard Francis Burton (noun)
English explorer who with John Speke was the first European to explore Lake Tanganyika (1821-1890)	English explorer who with John Speke was the first European to explore Lake Tanganyika (1821-1890)