playwright vs John Millington Synge

playwright and John Millington Synge both are nouns.

Word	Noun	Adjective	Verb	Adverb
playwright	Yes	No	No	No
John Millington Synge	Yes	No	No	No

playwright (noun)	John Millington Synge (noun)
someone who writes plays	Irish poet and playwright whose plays are based on rural Irish life (1871-1909)