playwright vs Eugene Gladstone O'Neill

playwright and Eugene Gladstone O'Neill both are nouns.

Word	Noun	Adjective	Verb	Adverb
playwright	Yes	No	No	No
Eugene Gladstone O'Neill	Yes	No	No	No

playwright (noun)	Eugene Gladstone O'Neill (noun)
someone who writes plays	United States playwright (1888-1953)