sanitisation vs sanitization

sanitisation and sanitization both are nouns.

Word	Noun	Adjective	Verb	Adverb
sanitisation	Yes	No	No	No
sanitization	Yes	No	No	No

As nouns, sanitisation and sanitization are synonyms defined as:

sanitisation and sanitization: making something sanitary (free of germs) as by sterilizing

Other synonyms of sanitisation include sanitation.

sanitisation (noun)	sanitization (noun)
making something sanitary (free of germs) as by sterilizing	making something sanitary (free of germs) as by sterilizing