hygienise vs hygienize

hygienise and hygienize both are verbs.

Word	Noun	Adjective	Verb	Adverb
hygienise	No	No	Yes	No
hygienize	No	No	Yes	No

As verbs, hygienise and hygienize are synonyms defined as:

Other synonyms of hygienise include sanitise, sanitize.

hygienise (verb)	hygienize (verb)
make sanitary by cleaning or sterilizing	make sanitary by cleaning or sterilizing