naturalisation vs naturalization

naturalisation and naturalization both are nouns.

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

As nouns, naturalisation and naturalization are synonyms defined as:

naturalisation and naturalization: the proceeding whereby a foreigner is granted citizenship

As nouns, naturalisation and naturalization are synonyms defined as:

naturalisation and naturalization: changing the pronunciation of a borrowed word to agree with the borrowers' phonology

As nouns, naturalisation and naturalization are synonyms defined as:

naturalisation and naturalization: the introduction of animals or plants to places where they flourish but are not indigenous

As nouns, naturalisation and naturalization are synonyms defined as:

naturalisation and naturalization: the quality of being brought into conformity with nature

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