Ralph Richardson vs Sir Ralph David Richardson

Ralph Richardson and Sir Ralph David Richardson both are nouns.

Word	Noun	Adjective	Verb	Adverb
Ralph Richardson	Yes	No	No	No
Sir Ralph David Richardson	Yes	No	No	No

As nouns, Ralph Richardson and Sir Ralph David Richardson are synonyms defined as:

Ralph Richardson and Sir Ralph David Richardson: British stage and screen actor noted for playing classic roles (1902-1983)

Other synonyms of Ralph Richardson include Richardson.

Ralph Richardson (noun)	Sir Ralph David Richardson (noun)
British stage and screen actor noted for playing classic roles (1902-1983)	British stage and screen actor noted for playing classic roles (1902-1983)