playwright vs Harley Granville-Barker

playwright and Harley Granville-Barker both are nouns.

Word	Noun	Adjective	Verb	Adverb
playwright	Yes	No	No	No
Harley Granville-Barker	Yes	No	No	No

playwright (noun)	Harley Granville-Barker (noun)
someone who writes plays	English actor and dramatist and critic and director noted for his productions of Shakespearean plays (1877-1946)