ingenuousness vs naturalness

ingenuousness and naturalness both are nouns.

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

As nouns, ingenuousness and naturalness are synonyms defined as:

Other synonyms of ingenuousness include artlessness, innocence.

ingenuousness (noun)	naturalness (noun)
openly straightforward or frank	the quality of being natural or based on natural principles
the quality of innocent naivete	the likeness of a representation to the thing represented
	the quality of innocent naivete