denationalisation vs denationalization

denationalisation and denationalization both are nouns.

Word	Noun	Adjective	Verb	Adverb
denationalisation	Yes	No	No	No
denationalization	Yes	No	No	No

As nouns, denationalisation and denationalization are synonyms defined as:

denationalisation and denationalization: changing something from state to private ownership or control

Other synonyms of denationalisation include privatisation, privatization.

denationalisation (noun)	denationalization (noun)
changing something from state to private ownership or control	changing something from state to private ownership or control