desalinisation vs desalinization

desalinisation and desalinization both are nouns.

Word	Noun	Adjective	Verb	Adverb
desalinisation	Yes	No	No	No
desalinization	Yes	No	No	No

As nouns, desalinisation and desalinization are synonyms defined as:

desalinisation and desalinization: the removal of salt (especially from sea water)

Other synonyms of desalinisation include desalination.

desalinisation (noun)	desalinization (noun)
the removal of salt (especially from sea water)	the removal of salt (especially from sea water)