Bard of Avon vs playwright

Bard of Avon and playwright both are nouns.

Word	Noun	Adjective	Verb	Adverb
Bard of Avon	Yes	No	No	No
playwright	Yes	No	No	No

Bard of Avon (noun)	playwright (noun)
English poet and dramatist considered one of the greatest English writers (1564-1616)	someone who writes plays