Sir Francis Drake vs Francis Drake

Sir Francis Drake and Francis Drake both are nouns.

Word	Noun	Adjective	Verb	Adverb
Sir Francis Drake	Yes	No	No	No
Francis Drake	Yes	No	No	No

As nouns, Sir Francis Drake and Francis Drake are synonyms defined as:

Sir Francis Drake and Francis Drake: English explorer and admiral who was the first Englishman to circumnavigate the globe and who helped to defeat the Spanish Armada (1540-1596)

Other synonyms of Sir Francis Drake include Drake.

Sir Francis Drake (noun)	Francis Drake (noun)
English explorer and admiral who was the first Englishman to circumnavigate the globe and who helped to defeat the Spanish Armada (1540-1596)	English explorer and admiral who was the first Englishman to circumnavigate the globe and who helped to defeat the Spanish Armada (1540-1596)