informality vs naturalness

informality and naturalness both are nouns.

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

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

informality (noun)	naturalness (noun)
a manner that does not take forms and ceremonies seriously	the quality of being natural or based on natural principles
freedom from constraint or embarrassment	the likeness of a representation to the thing represented
	the quality of innocent naivete