Sir Richard Burton vs Richard Burton

Sir Richard Burton and Richard Burton both are nouns.

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

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

Sir Richard Burton and Richard 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, Sir Richard Francis Burton.

Sir Richard Burton (noun)	Richard Burton (noun)
English explorer who with John Speke was the first European to explore Lake Tanganyika (1821-1890)	Welsh film actor who often co-starred with Elizabeth Taylor (1925-1984)
	English explorer who with John Speke was the first European to explore Lake Tanganyika (1821-1890)