celebration vs solemnisation

celebration and solemnisation both are nouns.

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

As nouns, celebration and solemnisation are synonyms defined as:

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

Other synonyms of celebration include solemnization.

celebration (noun)	solemnisation (noun)
any joyous diversion	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
a joyful occasion for special festivities to mark some happy event