naturalise vs naturalisation

naturalise is not a noun while naturalisation is a noun.

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

naturalise (noun)	naturalisation (noun)
	the proceeding whereby a foreigner is granted citizenship
	changing the pronunciation of a borrowed word to agree with the borrowers' phonology
	the introduction of animals or plants to places where they flourish but are not indigenous
	the quality of being brought into conformity with nature

naturalise (verb)	naturalisation (verb)
make into a citizen
make more natural or lifelike
adopt to another place
adapt (a wild plant or unclaimed land) to the environment