playwright vs J. M. Synge

playwright and J. M. Synge both are nouns.

Word	Noun	Adjective	Verb	Adverb
playwright	Yes	No	No	No
J. M. Synge	Yes	No	No	No

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