simplicity vs naiveness

simplicity and naiveness both are nouns.

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

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

Other hypernyms of simplicity include naivete, naivety.

simplicity (noun)	naiveness (noun)
freedom from difficulty or hardship or effort	lack of sophistication or worldliness
lack of ornamentation
the quality of being simple or uncompounded
absence of affectation or pretense
a lack of penetration or subtlety