Falstaff vs Sir John Falstaff

Falstaff and Sir John Falstaff both are nouns.

Word	Noun	Adjective	Verb	Adverb
Falstaff	Yes	No	No	No
Sir John Falstaff	Yes	No	No	No

As nouns, Falstaff and Sir John Falstaff are synonyms defined as:

Falstaff and Sir John Falstaff: a dissolute character in Shakespeare's plays

Falstaff (noun)	Sir John Falstaff (noun)
a dissolute character in Shakespeare's plays	a dissolute character in Shakespeare's plays