The word for ‘party’ in French is ‘fête’.
In French, ‘fête’ can refer to a celebration or festivity, which encompasses not just parties in the sense of social gatherings, but also holidays and special occasions. For example, you might say ‘Je vais à une fête’ to mean ‘I am going to a party.’
Keep in mind that the French language often uses the term in different contexts. For instance, if you want to describe a birthday party, you would say ‘fête d’anniversaire.’ This flexibility with the word makes it quite useful when talking about various types of celebrations.