Richardson vs Sir Ralph David Richardson

Richardson and Sir Ralph David Richardson both are nouns.

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

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

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

Other synonyms of Richardson include Ralph Richardson.

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)
United States architect (1838-1886)