solemnisation vs solemnization

solemnisation and solemnization both are nouns.

Word	Noun	Adjective	Verb	Adverb
solemnisation	Yes	No	No	No
solemnization	Yes	No	No	No

As nouns, solemnisation and solemnization are synonyms defined as:

solemnisation and solemnization: the public performance of a sacrament or solemn ceremony with all appropriate ritual

Other synonyms of solemnisation include celebration.

solemnisation (noun)	solemnization (noun)
the public performance of a sacrament or solemn ceremony with all appropriate ritual	the public performance of a sacrament or solemn ceremony with all appropriate ritual