anathematisation vs anathematization

anathematisation and anathematization both are nouns.

Word	Noun	Adjective	Verb	Adverb
anathematisation	Yes	No	No	No
anathematization	Yes	No	No	No

As nouns, anathematisation and anathematization are synonyms defined as:

anathematisation and anathematization: the formal act of pronouncing (someone or something) accursed

anathematisation (noun)	anathematization (noun)
the formal act of pronouncing (someone or something) accursed	the formal act of pronouncing (someone or something) accursed