simplicity vs naturalness

simplicity and naturalness both are nouns.

Word	Noun	Adjective	Verb	Adverb
simplicity	Yes	No	No	No
naturalness	Yes	No	No	No

As nouns, naturalness is a hypernym of simplicity; that is, naturalness is a word with a broader meaning than simplicity:

simplicity (noun)	naturalness (noun)
freedom from difficulty or hardship or effort	the quality of being natural or based on natural principles
lack of ornamentation	the likeness of a representation to the thing represented
the quality of being simple or uncompounded	the quality of innocent naivete
absence of affectation or pretense
a lack of penetration or subtlety