enthronization vs enthronement

enthronization and enthronement both are nouns.

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

As nouns, enthronization and enthronement are synonyms defined as:

enthronization and enthronement: the ceremony of installing a new monarch

Other synonyms of enthronization include coronation, enthronisation, investiture.

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