desynchronisation vs desynchronization

desynchronisation and desynchronization both are nouns.

Word	Noun	Adjective	Verb	Adverb
desynchronisation	Yes	No	No	No
desynchronization	Yes	No	No	No

As nouns, desynchronisation and desynchronization are synonyms defined as:

desynchronisation and desynchronization: the relation that exists when things occur at unrelated times

Other synonyms of desynchronisation include asynchronism, asynchrony, desynchronizing.

desynchronisation (noun)	desynchronization (noun)
the relation that exists when things occur at unrelated times	the relation that exists when things occur at unrelated times