celebration-n; 2 Senses

Sense Number 1: An unofficial joyful occasion.

Commentary: CELEBRATION[+event]

Examples:
We had a celebration for her birthday.
Any weekend can be a celebration of life.

Mappings:
WordNet 3.0 Sense Numbers: 1, 2

Sense Number 2: An official ceremony.

Commentary: CELEBRATION[+event][+official]

Examples:
The Pope had a celebration of Mass.
The celebration of marriage is a solumn occasion.

Mappings:
WordNet 3.0 Sense Numbers: 3