naturalisation vs naturalness

naturalisation and naturalness both are nouns.

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

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

naturalisation (noun)	naturalness (noun)
the proceeding whereby a foreigner is granted citizenship	the quality of being natural or based on natural principles
changing the pronunciation of a borrowed word to agree with the borrowers' phonology	the likeness of a representation to the thing represented
the introduction of animals or plants to places where they flourish but are not indigenous	the quality of innocent naivete
the quality of being brought into conformity with nature