acclimatisation vs acclimatization

acclimatisation and acclimatization both are nouns.

Word	Noun	Adjective	Verb	Adverb
acclimatisation	Yes	No	No	No
acclimatization	Yes	No	No	No

As nouns, acclimatisation and acclimatization are synonyms defined as:

acclimatisation and acclimatization: adaptation to a new climate (a new temperature or altitude or environment)

Other synonyms of acclimatisation include acclimation.

acclimatisation (noun)	acclimatization (noun)
adaptation to a new climate (a new temperature or altitude or environment)	adaptation to a new climate (a new temperature or altitude or environment)