enthronization vs enthronisation

enthronization and enthronisation both are nouns.

Word	Noun	Adjective	Verb	Adverb
enthronization	Yes	No	No	No
enthronisation	Yes	No	No	No

As nouns, enthronization and enthronisation are synonyms defined as:

enthronization and enthronisation: the ceremony of installing a new monarch

Other synonyms of enthronization include coronation, enthronement, investiture.

enthronization (noun)	enthronisation (noun)
the ceremony of installing a new monarch	the ceremony of installing a new monarch