1.Definition: a joyful occasion for special festivities to mark some happy event

Related Noun(s):jubilation

Category: General

2.Definition: any joyous diversion

Related Noun(s):festivity

Category: General

3.Definition: the public performance of a sacrament or solemn ceremony with all appropriate ritual

"The celebration of marriage"

Related Noun(s):solemnisation, solemnization

Category: General