celebration · noun C or U /ˌsel.əˈbreɪ.ʃən/
Nouns: celebration, celebrity
Adjectives: celebrated, celebratory
B1 a special social event, such as a party, when you celebrate something, or the act of celebrating something
There were lively New Year celebrations all over town.
Such good news calls for a celebration!
He told me that he decided to marry and he invited me [to] the celebration in Paris in November. (Preliminary English Test; B1; French)