memorisation vs memorization

memorisation and memorization both are nouns.

Word	Noun	Adjective	Verb	Adverb
memorisation	Yes	No	No	No
memorization	Yes	No	No	No

As nouns, memorisation and memorization are synonyms defined as:

memorisation and memorization: learning so as to be able to remember verbatim

Other synonyms of memorisation include committal to memory.

memorisation (noun)	memorization (noun)
learning so as to be able to remember verbatim	learning so as to be able to remember verbatim