playwright vs Pedro Calderon de la Barca

playwright and Pedro Calderon de la Barca both are nouns.

Word	Noun	Adjective	Verb	Adverb
playwright	Yes	No	No	No
Pedro Calderon de la Barca	Yes	No	No	No

playwright (noun)	Pedro Calderon de la Barca (noun)
someone who writes plays	Spanish poet and dramatist considered one of the great Spanish writers (1600-1681)