playwright vs George Dibdin Pitt

playwright and George Dibdin Pitt both are nouns.

Word	Noun	Adjective	Verb	Adverb
playwright	Yes	No	No	No
George Dibdin Pitt	Yes	No	No	No

playwright (noun)	George Dibdin Pitt (noun)
someone who writes plays	a British playwright who created the fictional character Sweeney Todd (1799-1855)