Shakespearian vs Shakespearean

Shakespearian and Shakespearean both are nouns.

Word	Noun	Adjective	Verb	Adverb
Shakespearian	Yes	Yes	No	No
Shakespearean	Yes	Yes	No	No

As adjectives, Shakespearian and Shakespearean are synonyms defined as:

Shakespearian and Shakespearean: of or relating to William Shakespeare or his works

As nouns, Shakespearian and Shakespearean are synonyms defined as:

Shakespearian (noun)	Shakespearean (noun)
a Shakespearean scholar	a Shakespearean scholar

Shakespearian (adjective)	Shakespearean (adjective)
of or relating to William Shakespeare or his works	of or relating to William Shakespeare or his works